Impressive value
Delivery was super fast and the product is genuine. I've had fakes before so this was a relief.
DoubleThe Kiwi Passionfruit Guava Double Brew Nic Salts 10ml 20mg by Double in Kiwi Passionfruit Guava at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.
Double Brew Nic Salts in Kiwi Passionfruit Guava is a 10ml nicotine salt e-liquid at 20mg/ml (2% nicotine by volume), sold as a refillable bottle rather than a sealed single-use device. It is a tropical fruit blend built around the three fruits named on the label: kiwi, passionfruit and guava. This page covers the flavour, the strength, the bottle and the kind of hardware it suits, so you can decide whether it fits how you vape before you order.
The numbers on the label matter in the UK. Nicotine-containing e-liquid can be sold in bottles of no more than 10ml, and the maximum strength is 20mg/ml. This bottle sits at the top of both limits, which means one bottle holds a total of 200mg of nicotine (20mg x 10ml). That is worth knowing if you are comparing price per ml, or planning how many bottles to keep in the house. Child-resistant, tamper-evident closures and a visible nicotine health warning are part of the standard format for products like this in the UK, and you should expect to see them on the bottle you receive.
Because this is a refill liquid and not a disposable, it works with pod systems and other low-power refillable devices that accept nicotine salts. Since 1 June 2025, single-use vapes have been banned from sale across Great Britain, and many former disposable users have moved to refillable pod kits for that reason. A 10ml salt bottle is the natural consumable for that kind of kit: you fill a small pod or tank, vape it down, then refill, instead of throwing away a whole device (battery and all) every few days.
The key facts at a glance:
The rest of this guide works through the flavour, the nicotine strength, the bottle, the devices that suit it, how long a bottle lasts, and what to do when something goes wrong. We have tried to be straightforward about the limitations as well as the strengths, because a flavour that suits one vaper can be too sweet or too sharp for another.
The name tells you the three fruits, and each one contributes something different to the blend. Kiwi usually reads as a bright, slightly sharp green fruit note with a juicy tartness. Passionfruit adds an aromatic, tangy layer that tends to sit toward the back of the flavour and linger a little on the exhale. Guava is the soft, rounded component: a mellow sweetness with a faintly floral, slightly musky edge that fills in the middle and stops the blend tasting purely sour.
Put together, the result is a tropical fruit flavour rather than a candy or dessert one. If you have ever had a kiwi and passionfruit juice or a guava smoothie, the general direction will be familiar. Flavour is subjective and e-liquid flavourings are an interpretation of fruit rather than a copy of it, so expect the character of each fruit rather than a literal fruit salad. Different people pick out different notes: some taste kiwi first, others get passionfruit up front.
A few points help set expectations:
Where it sits among tropical fruit e-liquids: it is gentler and rounder than a pure passionfruit or pure kiwi flavour, and less syrupy than mango-led blends. It is a decent choice for someone who wants a recognisably fruity vape without sitting in the heavy dessert or sweets category. On the other hand, if you want a single crisp fruit with no sweetness, or something strongly iced, there are simpler products that do that more directly.
One practical note on flavour strength: nic salts are usually mixed to be tasty at low power, so you do not need to push the wattage up to find the flavour. In fact, doing so tends to flatten the more delicate guava and passionfruit notes and push the profile toward a generic sweet fruit taste.
E-liquid flavour is not static. It changes with the coil, the temperature, the age of the bottle and even the way you draw on the device. Knowing what to expect helps you tell the difference between a normal change and a genuine fault.
The first few puffs on a new coil. A fresh coil needs a short priming period so the cotton or mesh is fully saturated. In the first few puffs you may taste a little cotton or a muted version of the flavour. After a few minutes, the kiwi and passionfruit notes sharpen and the guava fills in behind them. This is normal and is not a sign the liquid is poor quality.
Mid-pod. This is where the flavour is at its most balanced. Each puff should give a clear fruity inhale, a slightly tangy exhale and a soft sweet finish. If you vape in short, gentle draws, the flavour tends to stay clean and consistent.
Late in the coil's life. Sweet fruit liquids leave residue on the coil as they are heated, and over days and weeks that residue builds up. The first sign is usually that the flavour seems flatter, with the fruit notes dulling and the sweetness becoming more prominent and slightly caramelised. A burnt or bitter edge is the next stage. At that point the fix is a new coil or pod, not a different bottle.
Over the life of the bottle. Once opened, a 10ml bottle should be used within a reasonable period. Keep the cap on tightly, store the bottle upright away from direct sunlight and heat, and avoid leaving it on a windowsill or in a hot car. Light, heat and air all degrade flavour and can darken the liquid. Some darkening is normal with nic salts over time, but if the taste turns noticeably off or harsh, replace the bottle.
Steeping. Some vapers leave a new bottle for a day or two with the cap loosened briefly and then tightened, in the belief that the flavours blend more fully. Ready-mixed nic salts are generally designed to be used straight away, so steeping is optional. If you want to try it, keep the bottle out of light and heat and do not expect a dramatic change.
Palate fatigue. Fruit-forward flavours can seem to fade if you vape them constantly, a phenomenon often called vaper's tongue. If the flavour seems to have disappeared, try a glass of water, a different flavour for a day, or simply a break before assuming something is wrong with the liquid or the coil.
Nicotine salt e-liquid uses a form of nicotine combined with an organic acid (benzoic acid is common) so the pH is lower than traditional freebase nicotine. In practice this means the vapour is smoother on the throat at higher strengths, and the nicotine is absorbed relatively quickly. That is why nic salts are usually sold at 10mg and 20mg, while freebase e-liquids for sub-ohm devices are normally 0 to 6mg.
This bottle is 20mg/ml. That is the highest strength allowed in the UK, and it is aimed at people who need a fairly strong nicotine hit to replace smoking. It is not a beginner strength for someone who has never smoked, and it is not a casual-use strength.
As a rough guide, many vapers choose strength by how much they smoked:
These are generalisations, not medical advice. Everyone absorbs nicotine differently, and device type and puff style matter. A long, deep draw on a high-wattage device delivers far more nicotine than a short puff on a pod kit.
Signs you may be taking in too much nicotine include dizziness, nausea, headaches, sweating, a racing heart or feeling shaky. If that happens, stop vaping, sit down, drink some water and eat something. If you vape regularly at 20mg and feel these symptoms repeatedly, move to a lower strength. If you find 20mg leaves you reaching for a cigarette after an hour, try a stronger-delivering device or more frequent shorter puffs rather than a higher strength, since 20mg is the legal ceiling.
Do not try to dilute a 20mg salt with freebase e-liquid or unflavoured base to lower the strength. The pH balance changes and the result is unpredictable. If you want 10mg, buy a 10mg bottle, and check whether a lower-strength version of this flavour is listed on the site. Non-smokers should not use this product at all, and nicotine is not recommended for anyone who is pregnant or has a heart condition without speaking to a doctor first.
A 10ml e-liquid bottle is a simple object, but a few design details determine whether it is pleasant to use or a mess. For nicotine e-liquid in the UK, the container has to be child-resistant and tamper-evident, and it must carry a health warning, ingredient list and batch information. Those requirements shape the design more than any brand choice does.
Here is what to look for when your bottle arrives:
Build quality in this format is mostly about the cap thread, the nozzle seal and the label. A cap that does not thread cleanly, a nozzle that leaks around the neck, or a label that peels off in the first week are all reasons to get in touch. They are rare but not unheard of with any e-liquid brand at this price point.
Storage and safety. Nicotine e-liquid is toxic if swallowed, and children and pets are particularly at risk. Store bottles upright in a cool, dark place well out of reach, ideally in a closed box or cupboard. If liquid gets on your skin, wash it off with soap and water. If it gets in your eyes, rinse with plenty of water, and seek medical advice for any ingestion or persistent irritation.
Recycling empty bottles. Empty plastic bottles can often go in household plastic recycling, but rules vary by council, so check your local authority guidance. Many vape shops also offer drop-off points for e-liquid packaging. Do not pour leftover liquid down the drain; keep the cap on and dispose of it as your local rules advise.
The e-liquid is only half of the experience. The device and coil determine how the flavour is delivered, how much vapour you get, and how long each coil lasts. This liquid is formulated for low-power mouth-to-lung (MTL) vaping, so it matches best with refillable pod kits and slim tank systems.
Good matches. Open (refillable) pod kits are the main target. Popular families include the Vaporesso XROS, OXVA Xlim, SMOK Novo and Uwell Caliburn ranges, and many of their rivals. The key is that the pod can be refilled. Closed pre-filled pod systems that only accept proprietary cartridges will not take a bottled liquid.
Coil resistance and power. Nic salts work best with coils in roughly the 0.6 to 1.2 ohm range at modest power, commonly around 8 to 15 watts. Within that range, higher resistance coils (1.0 to 1.2 ohm) give a tighter draw, a stronger throat hit and lower vapour. Lower resistance coils (0.6 to 0.8 ohm) are airier, produce more vapour and make flavour stand out more, but they use more e-liquid and deliver more nicotine per puff.
Mesh versus ceramic versus standard cotton.
What to avoid. Do not use 20mg nic salt in a high-power sub-ohm tank at 40 watts or more. The vapour will be harsh, the nicotine hit will be much stronger than you intend, and you will burn through the bottle quickly. If you are using a sub-ohm device, a freebase e-liquid at a much lower strength is the appropriate choice.
Coil life. Sweet fruit e-liquids tend to shorten coil life. Expect a coil to last around one to two weeks with daily use, or roughly one to two 10ml bottles, depending on power and puff style. Keep spare pods or coils on hand so you are not stuck with a burnt one.
E-liquid does not contain a battery, so battery life and charging are determined by the device you pair it with. Most refillable pod kits that suit nic salts use an internal rechargeable lithium-ion battery in the region of 400mAh to 1,000mAh, charged via USB-C. Some compact pods go a little lower, while larger kits go higher.
You can estimate what to expect with simple arithmetic. A 1,000mAh battery at a nominal 3.7V stores around 3.7 watt-hours. At 12 watts, that is about 18 minutes of continuous firing. If your average puff is around 3 seconds, that works out to roughly 300 puffs before losses, which is in the region of one to two 2ml pods. Real-world figures vary with power setting, puff length and battery condition, but it is a useful guide when deciding if a device will last through your day.
Practical charging guidance:
A common cause of premature battery wear is running the device flat repeatedly or leaving it at 0% for long periods. A better habit is to top up when it reaches 20 to 30%.
Recycling devices and batteries. Vape devices contain lithium batteries and electronics, and they must not go in household bins or ordinary recycling. They are classed as waste electrical equipment (WEEE) and can be handed in at household waste recycling centres, and retailers that sell vape products are obliged to take back old ones. Look for in-store collection points or council drop-off bins. Removing and recycling a spent pod or coil properly also prevents e-liquid and metal from ending up in general waste.
Performance with a nic salt is different from performance with a freebase liquid in a sub-ohm kit. Instead of large clouds, you get a compact, flavourful vapour and a quick nicotine hit. Double Brew Kiwi Passionfruit Guava is designed for that style, so judge it on flavour consistency and satisfaction per puff rather than cloud size.
Puff delivery. With a typical mouth-to-lung pod kit at 10 to 15 watts, each puff delivers a modest amount of liquid, in the region of 5 to 8 milligrams of vapour. The throat hit at 20mg salt is noticeable but smooth, noticeably gentler than freebase at the same strength. Vapour volume is moderate, quite enough to confirm flavour but not enough to draw attention in a room.
How many puffs in a bottle. A rough figure for typical mouth-to-lung use is 150 to 300 puffs per millilitre, depending on puff length and power. That puts a 10ml bottle at roughly 1,500 to 3,000 puffs. A standard 2ml refillable pod therefore delivers somewhere around 300 to 600 puffs, so a 10ml bottle will fill a 2ml pod about five times.
How long that lasts depends on how much you use:
These are estimates only. If you use significantly more than 3 to 4ml a day at 20mg, consider whether you are taking in more nicotine than you need. The total nicotine in the bottle is 200mg, so at 3ml a day you are putting 60mg of nicotine through the device daily. Not all of that is absorbed, but it is a lot of nicotine, and it is worth keeping an eye on in case you start feeling dizzy or nauseous.
Consistency. Because the liquid is a pre-mixed nic salt, the flavour should be consistent from bottle to bottle, subject to normal batch variation. Differences in how it tastes are usually due to the coil age, device settings or palate fatigue rather than the liquid itself.
Real-world tips for getting more from a bottle: use lower power, take shorter puffs, replace the coil before it burns, and keep the pod topped up so the wick is never dry. Chain vaping uses a bottle fast and tends to increase both cost and nicotine intake.
A good e-liquid choice depends on the person as much as the product. Here is a straightforward look at who is likely to enjoy Double Brew Kiwi Passionfruit Guava at 20mg, and who is better off looking elsewhere.
Likely to suit:
Probably not the right choice:
If you are trying to stop smoking and want support, the NHS stop smoking services in your area can offer free advice and, in many cases, free access to nicotine replacement or a vape starter kit. Vaping is much less harmful than smoking for adults who switch completely, but it is not risk-free, and the aim for most people is to eventually reduce nicotine altogether.
Using a bottled nic salt is simple, but a few habits make the difference between a good experience and a leaky, burnt-tasting one. This is a step-by-step approach that works for most refillable pod kits.
Puff style. Mouth-to-lung vaping means drawing the vapour into your mouth first, pausing briefly, then inhaling into the lungs. Short, gentle draws of two to three seconds suit nic salts well. A long, hard pull heats the coil more and uses more liquid without improving flavour.
Pacing yourself. Because 20mg is strong, avoid chain vaping. Vape when you feel a craving, take a few puffs, then stop. Many people find that a handful of draws every 20 to 30 minutes is enough, and that it gets easier to space out after a few days.
Changing flavours. If you switch between flavours, empty the pod, rinse it with cool water, let it dry fully, and ideally fit a fresh coil. Otherwise, the previous flavour will carry over into the new one.
Hydration. Vaping can dry the mouth and throat. Keep water nearby and sip regularly, especially if you notice a dry or scratchy throat.
Most problems with a nic salt and pod kit have simple causes. Work through the likely causes before assuming the e-liquid is at fault.
If you have tried these steps and the problem continues, contact us with your order number, the batch code on the bottle and a photo if the issue is damage or leakage, and we will help work out whether it is a device or a product problem.
Value is more than the shelf price of the bottle. It depends on how long a bottle lasts, how many coils it burns through, and how well the flavour holds up. With 10ml at 20mg, you are buying 200mg of nicotine and, in typical pod use, somewhere in the range of 1,500 to 3,000 puffs. Divide the price on the page by 10 to see the cost per ml and compare it with other bottles on the same basis.
Against disposables. Before the 2025 ban, many people used disposable vapes with a fixed 2ml of liquid and a built-in battery. Over a month, a refillable pod kit with 10ml bottles is almost always cheaper, because you pay for the liquid and the occasional coil rather than a whole new device every few days. Refillables also produce less electronic waste. The trade-off is convenience: you have to charge, fill and maintain the kit.
Against other 10ml nic salt ranges. Brands such as Elfliq, IVG Salts and Pod Salt all sell 10ml nic salt bottles at similar strengths, often in the same fruit styles. Differences usually come down to flavour accuracy, sweetness level, price and the range of flavours on offer. We would not claim that this product outclasses those ranges in every respect. If you already have a favourite brand you trust, there is no particular reason to change, but if you like the kiwi, passionfruit and guava combination, it is worth trying here because that exact blend is not common.
Against 50ml shortfills with nic shots. Shortfills offer lower per-ml cost and more volume, but they are made for freebase and sub-ohm devices. Adding nicotine shots to reach 3 to 6mg gives a different experience from a 20mg salt, with less throat smoothness at low power. If you use a pod kit, nic salts are the better match; if you use a sub-ohm tank, a shortfill is the more economical route.
Weighing it up honestly.
If you want to keep costs down, buy multiple bottles at once if multi-buy offers are available, keep coils fresh to protect flavour, use lower power, and store bottles properly so none go to waste. Always buy from a UK retailer that checks age at purchase and gives clear batch and ingredient information. That is a better guide to quality than a low price alone.
| Brand | Double |
|---|---|
| Product type | E-Liquid |
| Nicotine strength | 20mg |
| Available flavours | 1 (Kiwi Passionfruit Guava) |
| Price | £1.10 |
| Availability | In stock — same-day dispatch |
| Compliance | UK TPD-compliant, MHRA-registered |
Double supplies e-liquids to the UK market through Vape Shop Online. We stock the current Double range in full with same-day dispatch on weekday orders before 4pm.
20mg/ml nic salt is the maximum strength allowed in the UK and is generally suited to people who smoke around 10 to 15 or more cigarettes a day. If you smoke fewer, or you are stepping down from vaping, 10mg may feel more comfortable. If you feel dizzy, sick or shaky after vaping, move to a lower strength.
The e-liquid has no battery of its own, so charging depends on your pod kit. Most use a USB-C cable and a standard 5V adapter and take around 30 to 90 minutes to charge. Do not leave a device charging unattended or overnight, and stop using it if it gets unusually hot or the casing looks damaged.
You can change flavours by emptying and rinsing the pod and fitting a fresh coil, but we do not recommend mixing two nic salts together in the same pod because it changes the taste and the strength unpredictably. Do not mix nic salts with freebase liquid. Check the product listings on the site for other flavours and strengths in the Double Brew range.
At typical mouth-to-lung pod use, a 10ml bottle represents roughly 1,500 to 3,000 puffs, or about five fills of a 2ml pod. For a moderate user taking around 2ml a day, that is about five days. Heavier use, higher wattage and longer puffs will use it faster.
Over a month, refillable pod kits with 10ml nic salt bottles are usually cheaper than buying replacement disposables, partly because you only replace the liquid and the occasional coil. Disposables have also been banned from sale in Great Britain since 1 June 2025. The trade-off is that you need a compatible refillable device and have to look after it.
It is intended for adult smokers who want a fruit-flavoured, smooth nic salt for use in a refillable pod device. It is not for anyone under 18, non-smokers, or people who are pregnant or who have heart conditions without medical advice. It is also not suitable for sub-ohm or high-wattage devices.
We deliver to addresses in the UK, and delivery options and costs are shown at checkout. As this is a nicotine product, age verification applies and we cannot supply anyone under 18. Please make sure someone aged 18 or over can accept the parcel.
E-liquid is a consumable, and for hygiene and safety reasons opened bottles generally cannot be returned. If your order arrives damaged, leaking or incorrect, contact us with your order number and a photo and we will arrange a replacement or refund in line with our returns policy. Please check the policy page for the full terms.
Store it upright in a cool, dark place, out of reach of children and pets, with the cap tightly closed. Empty plastic bottles can often be recycled in household plastic recycling, but local rules vary, so check with your council. Devices and batteries should go to a WEEE recycling point or a retailer take-back scheme, not the ordinary bin.
Royal Mail Tracked 24 (Next-Day): £1.99, FREE on orders over £20.
DPD Next Working Day: £3.99 (£2.99 over £20), FREE over £100.
Same-day dispatch on orders placed before 4pm Mon-Fri. See our delivery page for full details.
Delivery was super fast and the product is genuine. I've had fakes before so this was a relief.
Pleasantly surprised. Was expecting it to be average but it's actually really nice. Recommended.
Really nice flavour — not too sweet, not too harsh. Perfect in the middle. Second order already placed.
Easy to use, straight out the pack and working. No fiddling about with anything. Great for beginners too.
Solid purchase. Has become part of my routine now. Will continue ordering from here.
Battery lasts me a full day easily. Charging is quick. Overall very pleased with the purchase.
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