Spearmint Double Brew Nic Salts 10ml 20mg

Overview

The Spearmint Double Brew Nic Salts 10ml 20mg by Double in Spearmint at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Double Brew Nic Salts Spearmint 10ml 20mg at a glance

Double Brew Nic Salts Spearmint is a 10ml bottle of nicotine salt e-liquid with a strength of 20mg/ml, which is the same as 2% by volume. It is sold under the Double brand and was listed at £1.10 when this page was written, so check the price shown at the top of the page for the current figure. The flavour is spearmint: the sweet, rounded mint you know from chewing gum and mint sweets, rather than the sharp, icy hit associated with menthol. Both headline numbers on the label, 10ml and 20mg/ml, sit at the legal ceiling for refillable nicotine e-liquid in the UK. No retailer may supply a larger bottle, and no refill liquid may be stronger.

It helps to be clear about what this product is. It is not a disposable vape, not a pre-filled pod and not a device. It is the liquid that you pour into a refillable pod kit or small tank, and the hardware you already own does the heating. Single-use disposable vapes were banned from sale in Great Britain from 1 June 2025, and many adults who used to buy 600-puff disposables now pair a bottle like this one with a rechargeable pod kit. That route costs a little more up front for the device and much less per day afterwards, because a bottle of liquid is a small fraction of the price of a stack of throwaway vapes.

Here is the quick reference.

• Product type: nicotine salt e-liquid refill bottle
• Brand: Double (Double Brew range)
• Flavour: spearmint
• Bottle size: 10ml
• Nicotine strength: 20mg/ml (2%), which means a full bottle holds 200mg of nicotine in total
• Nicotine type: nicotine salt, which feels smoother at a high strength than traditional freebase nicotine
• VG/PG ratio: printed on the bottle label, so read it before you buy a device to match; salt liquids are commonly made near an even split or with a higher share of PG
• Suits: low-wattage pod kits and mouth-to-lung (MTL) devices
• Not suited to: high-wattage sub-ohm tanks, where a 20mg salt is wasteful and harsh
• Legal age to buy and use: 18 or over

The rest of this guide covers how the flavour behaves, what kind of device suits it, how to choose the right nicotine strength, how to fill and use it, what to do when something goes wrong, and how it compares with other 10ml salt ranges. It is written for adults who already smoke or vape. If you do not use nicotine today, this is not a product to start with.

Flavour profile: what spearmint tastes like in a vape

Spearmint and peppermint are different plants, and the difference shows up in the vapour. Peppermint gets most of its character from menthol, which is why it tastes sharp and feels cold. Spearmint is dominated by a different aroma compound, carvone, which reads as sweeter, greener and softer, and which has very little cooling effect on its own. That is the profile e-liquid makers try to reproduce when they label something spearmint, and it is the same note you find in spearmint chewing gum. Taste is personal and flavourings vary from batch to batch, so treat the notes below as a guide to what this flavour is aiming for rather than a promise of how every palate will read it.

On the inhale, expect a clean, lightly sweet mint that settles on the tongue rather than hitting the back of the throat. Mid-draw, the sweetness rounds out, a little like the first few seconds of a fresh piece of gum. On the exhale, you should get a gentle freshness that lingers briefly in the nose and mouth. It is cool without being icy. The product name does not include the word ice, which in vape naming usually signals an added cooling agent, so do not expect the frozen-throat feeling of a menthol or ice flavour.

Why choose mint at all? A few common reasons come up among adult vapers.

• Less flavour fatigue: sweet dessert and candy liquids can become cloying after a few days, while mint tends to stay pleasant through a whole bottle.
• A clean aftertaste: many people find mint leaves the mouth fresher than fruit or custard flavours, which helps if you vape in the morning or after meals.
• A step away from tobacco taste: ex-smokers who find tobacco flavours too close to cigarettes often move to mint or menthol as a clear break.
• Less coil gunk: liquids with a lighter sugar load usually leave less residue on the coil than heavily sweetened blends, so the coil can stay clean for longer.

Power matters for delicate flavours. Mint is subtle, and too much heat flattens it or turns it bitter. If your device lets you adjust wattage, begin at the low end and move up in small steps until the flavour is clear without tasting scorched. Fixed-output pod kits usually have the power set in a sensible range for salts, so there is little to adjust. Give the bottle a gentle shake before the first fill, as flavour compounds can settle slightly during transport.

Performance and puff delivery

E-liquid does not have a puff rating the way a disposable does, because the number of puffs depends on your device, your draw style and how much you vape. What we can do is give you a reasonable way to estimate. A single-use vape in the UK held at most 2ml of liquid, and the common 600-puff rating was based on that 2ml. A 10ml bottle is five times as much liquid, so on the same arithmetic it corresponds to roughly 3,000 puffs. Real use varies a lot, and some people get less because they take long, warm draws, while others get more because they take short ones.

In day-to-day terms, many pod-kit users go through somewhere between 1ml and 3ml of liquid per day, depending on how often they reach for the device and how strong the liquid is. At that pace, a 10ml bottle often lasts anywhere from three days to a little over a week. Treat that as a loose guide, not a guarantee. If you are replacing a pack-a-day cigarette habit, expect to be at the heavier end of the range for the first few weeks, then settling down as cravings ease.

What does the 20mg salt feel like in use? Nicotine salts are formulated with an added acid that lowers the pH of the liquid, which lets a high nicotine dose feel smoother on the throat than the same strength of freebase nicotine would. Salts are also absorbed quickly, so the hit of satisfaction arrives sooner. This is the reason salt liquids became the standard choice for people stepping away from cigarettes: you get a more cigarette-like level of nicotine from a small, gentle puff.

• Throat hit: moderate and smooth at 20mg in a salt; noticeably firmer than a 10mg salt, but far gentler than 20mg freebase.
• Vapour volume: modest, because salts are designed for low-power MTL draws; do not expect big clouds.
• Satisfaction per puff: high for the amount of vapour, so a few puffs often do what many puffs of a lower strength would.
• Flavour intensity: clear and clean at low wattage; it can dull if the coil is old or flooded.

Because the nicotine hits quickly, pace yourself. Take a few gentle puffs, wait, and see how you feel before taking more. Chain vaping on a 20mg salt is the quickest way to feel unwell, and it also burns through liquid. A slow, steady draw of two to three seconds is plenty for most devices, and it keeps the mint flavour crisp.

Bottle design and build quality

Refill bottles in the UK follow set packaging rules, so the design of this one is more about the details than about surprises. A 10ml nicotine e-liquid bottle is normally made from soft plastic with a narrow nozzle built into the neck, and it should have a child-resistant, tamper-evident cap. Those requirements are part of UK law for nicotine liquids. The label must carry health warnings, ingredient information and a batch number, along with the nicotine strength and the volume. You should check each of these on the bottle when it arrives, and the label is also the right place to read the VG/PG ratio.

The narrow nozzle matters more than it sounds. Most pod kits have a small fill port, sometimes only a few millimetres across, and a wide spout will spill. A thin tip lets you aim accurately and add a slow, controlled stream. The plastic should be soft enough to squeeze gently, so the liquid comes out in a measured way rather than a rush. If a bottle is rigid or the tip is blocked, do not push hard. Warm it in your hand for a minute and try again, and if the nozzle really is blocked, contact the shop.

Here is what to look for when your bottle arrives.

• An intact tamper-evident ring under the cap, showing the bottle has not been opened.
• A readable label showing the flavour, 20mg/ml, 10ml, batch number and warnings.
• A clean nozzle with no residue or cracks around the neck.
• No leaks in the outer packaging; a small amount of liquid on the outside of a sealed bottle is a sign of a faulty seal.
• A best-before date, which is normally printed on the label or the base.

The child-resistant cap is awkward on purpose. Push down and turn, or squeeze and turn, depending on the design. Always close it fully after use and keep the bottle out of reach of children and pets. A single 10ml bottle of 20mg liquid contains 200mg of nicotine, which would be dangerous if swallowed by a child, so storage is not a place to cut corners. Keep the bottle upright, keep the cap tight, and wipe the nozzle after filling so that residue does not build up around the thread.

Battery and charging: what your device needs

The bottle has no battery, so there is nothing to charge on the liquid itself. The device you pour it into does have one, and the battery has a surprisingly large effect on how a 20mg salt performs. This section explains what to look for in a device and how to look after it.

Most refillable pod kits that suit nicotine salts have an internal battery of roughly 400mAh to 1,000mAh, charged by USB-C. A compact 400mAh to 600mAh kit will often get you through a full day of light to moderate use, and a larger 800mAh to 1,000mAh one will cope with heavy use. Salt liquids at low power draw little current, so a salt device usually lasts longer between charges than a sub-ohm kit of the same battery size. Charging time for a small pod kit is typically 30 to 90 minutes, but check your own manual because charging speed varies by model.

• Use the supplied cable or a reputable replacement, and a standard USB charger rather than an unbranded one of unknown quality.
• Do not charge unattended for long periods or overnight, and never charge under a pillow or on soft furnishings.
• Do not use a damaged device. A dented casing, swelling, heat while idle or a hot charging port are warning signs. Stop using it and take it to a recycling point.
• Keep it out of pockets with keys or coins, which can short the contacts.
• Avoid heat and cold extremes. A hot car dashboard or a freezing garage both shorten battery life.

A low battery causes problems that look like liquid problems. When the charge drops, output falls, and the vapour becomes thinner and weaker, so the delicate spearmint note fades faster than a bolder flavour would. If your device starts tasting flat, charge it before blaming the bottle. Some devices have a draw-activated firing system, and some have a button; either works with this liquid. Draw-activated kits are simpler, but a button gives you slightly more control in a pocket, because it prevents accidental firing.

If you are moving from a disposable, expect a rechargeable pod kit to last for years rather than weeks. Disposables used lithium cells that were thrown away along with the plastic, which is part of why the ban came in. A rechargeable kit puts that battery to work for hundreds of charge cycles, and when it finally fails you take it to a recycling point rather than the bin.

Coil and mesh choices for a 20mg nic salt

The coil is the heating element in your pod or tank, and it is the part of your device that decides how a nicotine salt feels. A 20mg salt wants a modest amount of power and a restricted draw, so a coil designed for that is the right match. Coils are usually described by their resistance in ohms, and the resistance gives you a rough idea of how the device behaves.

• Around 0.8 to 1.2 ohm: the usual range for MTL pod kits. It runs at a low wattage, uses little liquid and gives the tight, cigarette-style draw that suits 20mg salts.
• Around 0.6 to 0.8 ohm: a slightly airier draw with more vapour. It can work with salts if the device has adjustable airflow and moderate power.
• Below 0.5 ohm (sub-ohm): built for high power and large clouds. Pair it with a 20mg salt and you get too much nicotine per puff, a harsh throat hit and rapid liquid use. If you want a sub-ohm device, buy a low-strength freebase liquid instead.

Coils are also made from different materials. Traditional wire coils, usually Kanthal or stainless steel, are inexpensive and heat quickly. Mesh coils spread the heat across a flat surface, which usually gives more even flavour and a slightly smoother vapour. Ceramic coils are known for lasting a long time and for keeping flavour clean, although they can be slower to prime. For a flavour as delicate as spearmint, either mesh or ceramic is a sensible choice, as both tend to resist the harsh, scorched notes that spoil mint.

A few habits get the most out of any coil.

• Prime a new coil. Put a few drops straight onto the exposed wick, then fill the pod and wait five to ten minutes before the first puff. A dry coil burns instantly and is ruined in one draw.
• Replace on schedule. Plan on replacing a coil or pod roughly every one to two weeks, or sooner if the taste gets muted or burnt.
• Do not keep firing an empty pod. Refill as soon as the liquid drops to the lower fifth of the tank.
• Stick to one flavour per coil. Coils absorb flavour, so switching from spearmint to a dessert flavour, or the reverse, can leave you with a muddy mix for a day or two.

Always check that your device can take a 10ml bottle nozzle. A few pods have extra-narrow ports, so a thin tip is helpful. If yours does not fit, a small blunt needle tip bottle for refilling can be bought separately.

Choosing your nicotine strength: is 20mg right for you?

The 20mg/ml figure on this bottle means there are 20 milligrams of nicotine in every millilitre of liquid, or 2% by volume. It is the top of the legal range in the UK, and it is a strong liquid. It is aimed at adults who currently smoke a meaningful number of cigarettes a day and who want enough nicotine to stop them reaching for a cigarette. For many other people it is more than they need.

A rough guide, which you should adjust to how you feel, looks like this.

• Around 10 or more cigarettes a day, or the first cigarette within half an hour of waking: 20mg is a common starting point for a salt.
• Around 5 to 10 cigarettes a day: a 10mg to 12mg salt is usually enough, and 20mg may feel too strong.
• Fewer than 5 a day, or social smoking: 5mg to 10mg is usually plenty.
• Already vaping and wanting to cut down: step down to a lower strength over weeks, not days.

Salt nicotine behaves differently from freebase. Because it is absorbed quickly and feels smooth, a salt can deliver nicotine faster than a freebase of the same stated strength. That is a benefit if you are trying to replace cigarettes, and a risk if you are not used to nicotine. The throat feels gentle, so you may not notice you are taking in a lot until you feel lightheaded.

Signs that a strength is too high include dizziness, nausea, a headache, sweating, a racing heartbeat, hiccups or a sudden feeling of being unwell. If this happens, stop vaping, sit down, drink some water and eat something. Next time, choose a lower strength or take fewer, gentler puffs. Signs that a strength is too low are the opposite: you keep reaching for the device, you chain vape, cravings return within an hour, and you start sneaking cigarettes. Raising the strength a little, or switching from a freebase to a salt, can fix this.

The aim for most adults is to find the lowest strength that stops them smoking, then to reduce slowly over time if they want to come off nicotine altogether. The NHS describes vaping as much less harmful than smoking but not risk free, and local stop smoking services in England and across the UK can offer free support and advice on getting from cigarettes to nothing. If you use other nicotine products such as pouches or patches at the same time, count them in your total, because the combined dose adds up.

This liquid is not for children, for non-smokers, or for anyone who is pregnant or has a heart condition unless a doctor has said it is appropriate. If you are in any doubt, speak to a pharmacist or GP first.

Who this e-liquid is for, and who should skip it

Spearmint at 20mg suits a fairly specific adult buyer. Reading through the list below should tell you quickly whether you are in that group.

This is likely a good fit if you:

• smoke around ten or more cigarettes a day and want to switch to vaping;
• already own a refillable pod kit or MTL device with a coil rated for salts;
• prefer a mild, sweet mint over a freezing menthol or a sugary dessert flavour;
• want an inexpensive liquid for everyday use and are happy to try one bottle to judge it;
• are moving away from disposables since the ban and want a lower running cost.

You may want something different if you:

• Smoke only a few cigarettes a day. Twenty milligrams is likely to be too strong, so look for a 10mg or lower bottle.
• Use a high-wattage sub-ohm tank. This liquid is not designed for that, and you will get a harsh hit and use up the bottle quickly.
• Want a strong cooling sensation. Spearmint is gentle; menthol or ice flavours deliver far more chill.
• Want to avoid nicotine altogether. This is a nicotine product. Choose a nicotine-free liquid if you only want flavour, but note that a nicotine-free option is a different product.
• Are under 18. It is illegal for retailers to sell nicotine vape products to under-18s, and for adults to buy them on their behalf.

A word on first-time vapers. If you have never used a vape and do not smoke, do not use this. Nicotine is addictive, and 20mg is a lot for a body that is not used to it. If you do smoke and are thinking about switching, a lower strength may be wiser for your first few days. Many people find they feel better with 10mg or 12mg than with the strongest legal bottle, especially with a salt, and it is far easier to move up a strength than to recover from taking too much.

Existing vapers who like mint are the other natural audience. If you already use another mint or menthol salt and want a gentler, sweeter variation, a spearmint bottle is an inexpensive way to try something different without changing your device.

How to fill and use a 10ml nic salt bottle

Filling a pod is simple once you have done it a couple of times. The steps below suit most pod kits, but your manual should always have the final say for your specific model.

• 1. Switch the device off or remove the pod, and wash your hands so the pod and mouthpiece stay clean.
• 2. Check the coil. If the pod uses a replaceable coil, make sure it is seated firmly. If it is new, add a few drops directly on the wick to prime it.
• 3. Open the fill port. Most pods have a silicone bung that lifts or slides back. Do not force it, as it can tear.
• 4. Shake the bottle gently, then press the cap down and turn to open it.
• 5. Fill slowly. Rest the tip against the edge of the port and squeeze gently. Stop just below the maximum line, as overfilling causes flooding and leaks, and never fill the central air tube.
• 6. Close the port, wipe away any spills with a tissue, and close the bottle tightly.
• 7. Wait five to ten minutes so the liquid soaks into the cotton before the first puff.
• 8. Take a gentle first draw, then a few more at a slow, steady pace. If it tastes burnt, stop and wait a little longer.

Two common filling styles exist. Top-fill pods open at the mouthpiece end; bottom-fill pods have a port on the base. Top-fill pods are slightly easier to see into, but bottom-fill pods are less likely to leak into the airflow if you keep them upright. In either case, a 10ml bottle gives you around five fills of a standard 2ml pod, though some of the liquid stays soaked in the coil, so the number can come out as four or five in practice.

Once the device is filled, here are some habits that keep the experience pleasant.

• Keep the device upright when it is not in use to stop liquid pooling around the coil.
• Take a few puffs at a time rather than long, hot ones, as this protects the coil and the flavour.
• Wipe the mouthpiece regularly, particularly if you have used the device when eating or drinking.
• Do not mix other nicotine liquids in the same pod. Doing so makes it impossible to know your total dose.
• If you change flavour, empty the pod, wipe it dry and swap the coil, so the spearmint does not carry over into the next liquid.

Never add anything to the liquid, such as extra flavour drops, water or alcohol. The liquid is mixed to a specific formula, and altering it can ruin the flavour, damage the coil and make the nicotine level uncertain.

Troubleshooting common problems

Most problems with refillable devices come down to a small handful of causes, and almost all are easy to solve. Work through the list before deciding something is wrong with the liquid.

• Burnt or acrid taste. Usually a dry or worn coil. Check the liquid level, prime the coil, wait longer after filling, and replace the coil or pod if the taste persists. Chain vaping can also dry the cotton out, so slow down.
• Weak flavour. Check the battery first, then the coil. A coil that has been used for a couple of weeks, or one that has been exposed to a stronger flavour, will mute spearmint quickly. Fresh coil, fresh pod, and the flavour should return.
• Gurgling or spitting. The coil is flooded. Take the pod out, blow gently through the mouthpiece to clear it, wipe up excess and let it rest. Overfilling is the usual cause.
• Leaking. Inspect the pod for cracks, check the bung is seated and the pod is fitted straight. Store the device upright. Lower the fill level slightly next time.
• Harsh throat hit. Often a sign the strength is too high or the power too high. Try a lower strength liquid, a lower wattage or a looser draw.
• Dizziness, nausea or headache. Stop, take a break, drink water and eat something. Choose a lower strength next time or slow down.
• Sweet or sticky residue around the pod. Wipe it clean. Old residue can seal the contacts and stop the device firing.
• Device will not fire. Check the battery, check the pod is clicked in properly, and clean the contacts with a dry cotton bud. If it still does not work, the device may be faulty and should be taken up with its maker.
• Liquid thickens in cold weather. Very cold liquid is slower to wick. Warm the bottle in your hands before filling.
• Blocked nozzle. Do not push the bottle hard. Wipe the tip, warm it and squeeze gently. If it is still blocked, contact the shop.

Keep in mind that a persistent problem across several flavours usually points at the device, not the liquid. If another bottle works well in the same pod but this one does not, the problem may be the bottle or batch, so contact us with the batch number and a photo.

One more case worth mentioning is the odd taste after changing flavour. Cotton and silicone parts hold flavour, so even a clean coil can taste of the previous liquid for a day or two. The fix is simple: use a fresh coil, wipe the pod, and let a few puffs clear the old taste before judging the new flavour.

For symptoms that worry you, or for a reaction that does not clear up quickly, seek medical advice, and consider reporting a suspected side effect of an e-cigarette or e-liquid through the MHRA Yellow Card scheme.

Storage, safety, UK rules and recycling

Nicotine liquid needs careful handling. A sensible routine keeps the flavour fresh and, more importantly, keeps people and pets safe.

• Keep it out of reach. Store the bottle where children and pets cannot get at it. Nicotine is poisonous if swallowed or absorbed through the skin in quantity.
• Store it cool, dark and upright. Heat and sunlight degrade the flavour and can darken the liquid. A cupboard is better than a windowsill or car glovebox.
• Wipe up spills at once and wash your hands if liquid touches your skin.
• Do not decant into other containers unless they are properly labelled and child-resistant. Unmarked bottles are a hazard.
• Never drink or ingest the liquid. If it is swallowed, or if it gets into the eyes, call for urgent medical help and have the bottle with you.

The UK rules that apply to this bottle are straightforward. Refillable nicotine e-liquid can be sold in containers of up to 10ml, and the nicotine strength cannot exceed 20mg/ml. The same 20mg limit applied to disposable vapes, whose tanks were also limited to 2ml, before the ban on single-use vapes began in Great Britain on 1 June 2025. Refillable tanks and pods are limited to 2ml. Bottles must have child-resistant and tamper-evident closures, and carry the health warning and ingredient information on the label. The minimum age for purchase is 18, and retailers can ask for proof of age at purchase or on delivery.

Recycling matters for the device more than the bottle. Rechargeable pod kits contain a lithium battery and must never go in household waste or ordinary recycling, because crushed batteries can start fires in bin lorries and recycling plants. Take used devices, pods that contain electronics and damaged batteries to a drop-off point. Many vape shops accept them, as do household waste recycling centres and some council collection points, so check the location nearest to you. Empty e-liquid bottles can contain a little nicotine residue, so follow your local council guidance, and do not pour unused liquid down the sink or into drains.

If you ever see a shop selling to children, a counterfeit-looking product or a bottle without the proper labelling, you can report it to your local Trading Standards office. Reports of side effects from vaping products can be made through the MHRA Yellow Card scheme. These routes help keep the market safe for everyone else.

Value for money and honest comparisons

At £1.10 for 10ml when this page was written, Double Brew Spearmint works out at 11p per millilitre. That is a very low price, and it is the main reason people look at this range. For context, a daily use of about 2ml would cost roughly 22p a day in liquid. Even adding the cost of replacement pods or coils, which might be a few pounds a month, the total is a small fraction of what a daily cigarette habit costs, with a pack of 20 costing well over £10 in the UK. Prices change, so check the current figure on the page.

Compared with disposables, the gap is larger. A typical single-use vape was priced at around £5 or more for roughly 600 puffs and then thrown away. A 10ml bottle gives you the liquid for roughly five times that, and the device keeps working. Disposables are also now off the legal market in Great Britain, so the comparison is partly historical, but it explains why so many adults moved to pod kits.

How does it stack up against other salt brands? An honest comparison needs to cover both what you gain and what you give up.

• Against well-known branded ranges such as Elfliq, IVG Salt, Nasty Salt or Hayati: those brands generally have much bigger flavour catalogues and more name recognition, and they usually cost more per bottle. If brand familiarity or a very specific flavour matters to you, they may suit you better.
• Against other budget salts: the Double Brew range competes mainly on price and a simple range of flavours. Quality can vary between budget ranges and even between batches, so buy a single bottle first before committing to several.
• Against menthol or ice salts: if you want a strong cooling effect, spearmint will feel mild. If you want a softer mint, it is a better match than a menthol blast.
• Against sweet fruit or dessert flavours: spearmint is lighter and tends to leave a cleaner coil, but it lacks the richness some vapers want.

What Double Brew gives you is a low-priced, simple mint that works in the pod kit you probably already own. What it does not give you is a long list of published technical details, so you should read the bottle label for the VG/PG ratio and batch information. We would rather say so than pretend that a low price means anything other than a low price.

A practical way to judge value is to buy one bottle, use it in a clean coil and see how long it lasts, how the flavour holds up between the first and last fill, and whether the throat hit suits you. If it does, you can order several together and save on delivery. If it does not, you have spent very little finding out. In a market full of bottles that cost three or four times as much, that low-risk trial is the real value on offer here.