Nice clean hit
Honestly, I was unsure at first but this has been great. Flavour is strong and lasts the full session. No complaints at all.
DoubleThe Blackcurrant Blackberry & Apple Double Brew Nic Salts 10ml 20mg by Double in Blackcurrant Blackberry & Apple at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.
Double Brew Nic Salts Blackcurrant Blackberry & Apple is a 10ml nicotine salt e-liquid at 20mg/ml. It is sold as a bottle of liquid rather than a ready-made device, which means it is designed to be poured into a refillable pod kit or another low-power device that accepts nic salt e-liquid. The flavour pairs three fruit notes, dark blackcurrant, blackberry and green apple, into a single blended profile. If you are moving away from single-use vapes, or you already run a refillable pod system and want a fruit flavour that is neither sugary candy nor icy menthol, this is the kind of bottle worth a look.
The key facts in one place:
This page is written to be straight about what the product is and is not. A bottle of liquid does not carry a puff count the way a disposable does, so we explain how far a bottle typically goes in practice. It also does not include a battery, so we cover how to match it with a device and what to look for there. Where a specification is not something we can state with certainty, such as the precise VG/PG ratio, we say so and point you to the bottle label rather than guessing.
Nicotine is addictive and vaping is not risk-free. This product is for adults who already smoke or vape and want an alternative. It is not for non-smokers, anyone under 18, or anyone who is pregnant or breastfeeding.
The name gives away the recipe, but how the three fruits sit together matters more than the list. Here is how this flavour is built, and what to expect on your first few pulls.
On the inhale you should notice the dark berry first, with the apple coming through more on the exhale and in the aftertaste. The finish is fruity and moderately sweet rather than sticky. Nothing in the product name suggests a menthol or ice element, so expect a room-temperature, fruit-forward vape rather than a cooling one. If you prefer a chilled finish, look for an ice variant elsewhere in the range instead of assuming this one has it.
The nicotine format also shapes flavour. Nicotine salts are typically made with an organic acid such as benzoic acid, which lowers the pH of the liquid and smooths the throat hit. That smoothness lets the fruit notes stay in front instead of being masked by the harshness you would get from a high strength of freebase nicotine. At 20mg the nicotine still has a presence, a gentle tickle at the back of the throat, but in a properly matched device it should not overpower the berries.
Flavour perception varies from person to person and from device to device. A hotter, higher-wattage setting tends to push the blend towards sweetness and flatten the tartness. A cooler, lower-wattage setting usually keeps the blackcurrant sharper and the apple more distinct. If the first pod tastes slightly muted, give it a few puffs, because a new coil often needs a short time to settle in, which we cover in the how-to section.
It is also worth being realistic about long sessions. Dark fruit blends can cause vape tongue, sometimes called taste fatigue, where the flavour seems to fade after hours of constant use. Switching to a different flavour for a day, drinking water and keeping your coil fresh are the usual remedies.
E-liquids do not have a puff count in the way pre-filled products do, so the honest way to describe performance is through volume and typical use. A 10ml bottle contains ten millilitres of liquid. A common refillable pod holds around 2ml, which is also the UK limit for tank and pod capacity, so one bottle fills a typical pod roughly four to five times once you allow for a little spillage and priming.
How many puffs that translates to depends on your device, the wattage, how long you draw and how often you vape. As a planning figure, many vapers get somewhere between 100 and 200 puffs per millilitre on a low-power pod kit, which suggests around 1,000 to 2,000 puffs from a 10ml bottle. Treat that as an estimate, not a promise. The puff counts printed on disposable packaging are usually far higher per millilitre than everyday use supports, so do not use them as a yardstick.
In terms of days rather than puffs, a rough guide looks like this:
Throat hit and vapour production are the other two performance factors. At 20mg in salt form, the throat hit is noticeable but smoother than a freebase liquid of the same strength. Vapour volume is modest compared with high-power sub-ohm vaping, because salts are made for low-wattage devices where the goal is a satisfying nicotine delivery from small, tight draws rather than big clouds. If you want large clouds, a nic salt at this strength is the wrong tool, and a lower-strength freebase or shortfill in a suitable device is a better match.
Consistency across the bottle should be steady. The liquid is a thin-to-medium viscosity blend that wicks readily in most pod coils. If you notice the flavour fading or the vapour thinning part-way through a pod, the usual cause is a tired coil or a half-empty pod rather than the liquid itself. We cover that in the troubleshooting section.
Twenty milligrams per millilitre is the highest strength that can legally be sold as a nicotine e-liquid in the UK. The same ceiling applies to every nicotine e-liquid on the market, including the liquids used in refillable systems that replaced single-use disposables, which have been prohibited from sale in the UK since June 2025. Because it is the top of the range, 20mg is not automatically the right choice. It is a good fit for some people and too strong for others.
As a general guide:
Nicotine salts behave differently from freebase nicotine. Salts are absorbed more quickly and feel smoother, so a 20mg salt can deliver nicotine faster than a freebase liquid with the same number on the bottle. That is why people switching from freebase sometimes find 20mg salt stronger than expected, even though the throat hit feels gentler.
Signs that the strength is too high include dizziness, nausea, a racing heart, headaches or a sore, tight throat. If you notice any of these, stop vaping, drink some water and consider a lower strength. Signs that it is too low include constant chain vaping, cravings that return within minutes and falling back to cigarettes. The aim is to find the lowest strength that stops you smoking, then reduce over time if you wish to.
One more practical point. A 20mg nic salt is designed for low-wattage devices. If you pour it into a high-power sub-ohm tank, the large volume of vapour per puff delivers far more nicotine than you intend and the liquid will taste harsh. Match the strength to the device as carefully as you match it to yourself.
A liquid does not have a body or casing to judge, so build quality here comes down to the bottle, the cap, the label and the packaging. The 10ml size is the legal maximum for nicotine e-liquid in the UK, and the bottle is expected to follow the usual UK format: a soft plastic bottle with a narrow nozzle and a child-resistant, tamper-evident cap.
What to look for when your bottle arrives:
The visual design of the label follows the fruit theme, with dark berry colours to signal the flavour at a glance. That matters more than it sounds, because when you own several bottles it is easy to pour the wrong one into a pod. Keep the bottle in its box or at least labelled if you also have other flavours or other strengths on the shelf.
Storage is part of build quality too. Nic salt liquids are sensitive to heat and sunlight, which can darken the colour and dull the flavour over time. Keep the bottle upright in a cool, dark place with the cap fully closed. A bottle stored sensibly should keep its flavour for many months. If the colour has darkened a little, that is normal oxidation of the nicotine and flavourings, though a strong change in smell or taste is a sign to replace it.
This product is a liquid, so it has no battery of its own. The experience depends heavily on the device you pair it with, and the battery in that device affects how the liquid performs. Here is what to look for.
Nic salts are designed for low-power pod systems, and most of those use rechargeable lithium-ion batteries in a fairly narrow range. Compact pod kits typically carry batteries of roughly 400mAh to 1,000mAh, and slightly larger pod mods go up to around 1,500mAh. A bigger capacity gives you more vaping time between charges, but it also makes the device bulkier. For a nic salt user who wants to carry the device in a pocket, somewhere in the 500mAh to 1,000mAh range is a sensible middle ground.
Practical charging advice that applies to almost every pod kit:
Some pod kits are draw-activated, which means they fire when you inhale, and others have a firing button. Draw-activated kits are convenient with salts because the tight, mouth-to-lung draw triggers the device naturally. Buttons give you more control and are less likely to fire accidentally in a bag.
Battery condition affects flavour. As a battery runs low, the output voltage falls and the vapour can feel cooler and thinner, which many people read as the liquid fading. Recharging before the battery is fully flat tends to give steadier flavour. When a device reaches the end of its life, with swollen casing, very short run time or unusual heat, stop using it and recycle it properly.
Coils are the heating element that turns liquid into vapour, and the coil in your device has more influence on how Blackcurrant Blackberry & Apple tastes than almost anything else. Nic salts at 20mg are made for coils that run at low power, so it helps to understand the common types.
For a fruit blend like this one, either a standard coil or a mesh coil will work. If you want to taste the tart blackcurrant and the crisp apple distinctly, a standard coil at a modest setting is a good starting point. If you want a fuller, juicier vape, a mesh coil should bring out the sweeter blackberry notes.
Resistance and wattage need to match. A rough rule is that higher resistance coils want lower wattage. Running a 1.2 ohm coil at 10W to 12W is typical, while a 0.8 ohm mesh coil may sit at 12W to 15W. Follow the range printed on the coil or in the device manual rather than pushing beyond it. Too much power with a salt liquid gives a hot, harsh vape and burns the coil faster.
Coil life is another variable. Sweet fruit liquids tend to leave more residue on the coil than unsweetened flavours, so expect a coil to last somewhere around one to two weeks of regular use. When flavour turns flat or burnt even after a fresh fill and a short rest, it is time to replace the coil or pod instead of the liquid.
A good product description should tell you when not to buy, so here is a direct answer on suitability.
This is likely a good fit if you:
You should probably skip it if you:
It is also worth thinking about experience level. For someone brand new to refillable vaping, a pod kit is simple, but the filling and priming steps do add a small learning curve compared with a disposable. The method is easy once you have done it a couple of times, and the how-to section below walks through it. For experienced users, this is a straightforward fruit blend that will sit alongside other nic salt flavours in a rotation.
Finally, think about how often you vape. If you only vape occasionally, a 10ml bottle may last weeks, and an opened bottle will gradually lose some of its flavour. In that case it is better to buy one bottle at a time instead of stocking up.
Using a bottle of nic salt is simple once you have done it once. Follow these steps for a clean fill and a good first impression.
Work through the steps below in order.
A mouth-to-lung draw is the usual technique for salts: draw into your mouth for a couple of seconds, pause briefly, then inhale into the lungs. Slow, smooth draws usually give a cleaner flavour and avoid flooding the coil.
For the first few days, pay attention to how your body responds. If 20mg feels too strong, space out your puffs or consider a lower strength. If you find yourself vaping far more than you smoked, that can also be a sign the strength is too low. Keep a note of how long a pod lasts, because it makes it easier to judge how much liquid you actually use and to plan your next purchase.
Do not mix this liquid with other e-liquids in the same pod. Different flavourings and nicotine strengths can produce unpredictable tastes, and mixing makes it harder to work out what is causing a problem. Empty and rinse the pod properly if you switch flavours.
Most problems with a nic salt and pod combination come from a short list of causes. Here is a plain-English guide to the usual ones.
If you have tried these checks and the problem remains, consider whether it is the device rather than the liquid. A quick way to find out is to try a different liquid in the same pod, or a fresh pod with the same liquid. If the problem follows the liquid, such as an off smell, a visible change in clarity, or a taste that is wrong from the first puff, stop using it and get in touch with the batch code from the label.
Never ignore overheating, swelling, hissing or a smell of burning from a device. Stop using it immediately, remove it from any charger and place it somewhere safe and non-flammable.
Value in vaping is mostly about cost per millilitre and how well a product fits your habit. A 10ml bottle of nic salt is one of the more economical ways to vape because you are paying for the liquid, not for a battery and a casing that is thrown away. Check the current price on this page, as prices and promotions change. As a rough guide, typical 10ml nic salt bottles in the UK sit between about £3 and £5, which works out at around 30p to 50p per millilitre.
Here is how that compares with the main alternatives:
Where this liquid offers good value is in the combination of a distinct fruit flavour, the top legal strength and a small, low-commitment bottle. Where it may not suit is if you want a very wide flavour range, a cooling finish or a high-volume cloud-chasing setup.
A fair way to judge value is to estimate how many days a bottle lasts for you, divide the price by those days, and compare that with what you used to spend on cigarettes or disposables. For most people who switch fully, the saving is clear. If you only dual-use, the saving is smaller but still usually positive.
Selling and using nicotine e-liquid in the UK is regulated, and it helps to know what the rules mean in practice.
Safe storage. Keep nicotine liquid out of reach of children and pets, ideally in a high cupboard. Store it upright, with the cap closed, away from heat and direct sunlight. 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 advice. If anyone swallows nicotine liquid, contact emergency services or NHS 111 straight away and have the bottle to hand.
Recycling and disposal. Devices, batteries and chargers should never go in household bins or general recycling, because lithium batteries can start fires in collection vehicles and waste sites. Take used vapes and pod kits to a retailer take-back scheme, or to a household waste recycling centre that accepts small electricals. Many vape shops accept used devices for recycling even if you did not buy them there, though it is worth checking first.
Empty liquid bottles are usually plastic. Rules differ between councils, so check your local guidance. In many areas an empty, dry bottle can go in the household plastics recycling, but some councils ask that small nicotine containers go to the recycling centre instead. Do not pour leftover liquid down the sink or into the garden. Seal the bottle and take it to your local hazardous waste point.
| Brand | Double |
|---|---|
| Product type | E-Liquid |
| Nicotine strength | 20mg |
| Available flavours | 1 (Blackcurrant Blackberry & Apple) |
| 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.
Twenty milligrams is the highest strength allowed in the UK and generally suits adults who smoked around fifteen or more cigarettes a day, or who are moving from a 20mg disposable. If you smoked ten or fewer a day or you are sensitive to nicotine, a lower strength such as 10mg to 12mg is usually more comfortable. If you get dizziness, nausea or headaches, the strength is probably too high.
Use it in a refillable pod kit or another low-power device that accepts nic salt e-liquid, typically running at about 8W to 15W. The liquid has no battery, so charging depends on your device. Use the supplied USB-C cable with a standard adapter, charge on a hard surface and never leave it charging unattended overnight.
This listing is the Blackcurrant Blackberry and Apple flavour at 20mg. Other Double Brew flavours and any lower strengths are listed on their own product pages when they are in stock, so browse the brand page to see what is currently available. Avoid mixing different liquids in the same pod.
It depends on your device and how much you vape. As a rough guide, a light user may get one to two weeks, a moderate user four to seven days and a heavy user two to four days. A 10ml bottle fills a typical 2ml pod about four to five times, which many vapers find equals roughly 1,000 to 2,000 puffs.
A 10ml bottle usually costs about 30p to 50p per millilitre, while pre-filled pods typically cost several times that. You do need a refillable pod kit, so there is an upfront cost, but most regular vapers recover it within a few weeks. Disposable vapes can no longer be sold in the UK, so refillables are the practical alternative.
It is intended for adult smokers and existing vapers who want a fruit-flavoured nic salt at the top legal strength. You should not buy it if you are under 18, if you do not already smoke or vape, or if you are pregnant or breastfeeding. It is also a poor match for high-power sub-ohm devices.
Yes, we deliver to UK addresses, and the delivery options and costs are shown at checkout. Because nicotine is an age-restricted product, you must be 18 or over, and we or the courier may ask for proof of age. Delivery times can vary by service, so check the estimate at checkout.
Contact us as soon as possible with your order number and, if you can, a photo of the damage and the batch code on the label. For hygiene and age-restriction reasons, opened e-liquid is usually not returnable unless it is faulty or was sent in error. See our delivery and returns pages for the current terms.
Devices, batteries and chargers should go to a retailer take-back scheme or a household waste recycling centre, never in household bins. Empty bottles are usually plastic, but councils differ, so check your local guidance. Do not pour leftover liquid down the drain.
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.
Honestly, I was unsure at first but this has been great. Flavour is strong and lasts the full session. No complaints at all.
Excellent all round. Will absolutely be ordering again. Customer service was helpful too.
Can't fault it. Quality is there, flavour is there, delivery was quick. What more could you want.
Picked this up on the multibuy deal and I'm stocked up for a while. Flavours are all on point.
Great product for the price point. Works exactly as advertised. No surprises, just a solid vape.
Not too strong, not too mild — just right. Good for all day use without being overpowering.
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Angel
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