Been using for weeks
Battery lasts me a full day easily. Charging is quick. Overall very pleased with the purchase.
DoubleThe Cola Lime / Coco Lime Double Brew Nic Salts 10ml 20mg by Double in Cola Lime / Coco Lime at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.
Double Brew Nic Salts in Cola Lime and Coco Lime is a 10ml bottle of nicotine salt e-liquid at 20mg/ml, made for refillable pod kits and other low-power mouth-to-lung devices. This listing covers two flavours from the same range: Cola Lime, a fizzy-drink style profile with a citrus finish, and Coco Lime, a creamy coconut note lifted by green lime. Both sit in the sweet-and-sharp corner of the flavour map, so if you want a drink-inspired liquid that is neither a plain fruit nor a heavy dessert, this pairing is aimed squarely at you.
This page covers the practical questions a UK buyer usually has before ordering. What does 20mg/ml feel like when you inhale it? Which devices suit it? How long will a 10ml bottle last? What goes wrong when people use it badly, and how does it compare with other nic salt ranges? We have written it as a plain explainer rather than a sales pitch, so you will also find the situations where this is not the right product for you.
A few basics before the detail:
That last point matters more than it used to. The sale of single-use vapes ended in the UK on 1 June 2025, and since then a bottle of nic salt for a reusable pod kit has become the usual route for adults who want a pocketable, low-effort nicotine product. Refilling a reusable device also creates far less waste than binning a disposable every few days, which is a practical advantage on top of the cost saving we discuss later on this page.
One honest caveat from the start: we describe flavours in general terms and we do not publish lab results for this specific batch. Your bottle label is the source of truth for ingredients, base ratio and batch number, and you should always read it before use.
Specification lists are only useful if you know what each line changes in daily use. Here is how the numbers on this product translate into what you will actually experience.
Why does nic salt at 20mg matter so much? Freebase nicotine at 20mg/ml would feel harsh and scratchy in most people's throats. Salt formulations absorb faster and feel smoother, which is why they became the standard for pod kits and disposables. The trade-off is that the nicotine hit is delivered quickly and efficiently, so a 20mg salt is not a gentle option for someone who has never smoked. If you want a lower strength, look for a 10mg listing rather than trying to dilute this bottle yourself, because home mixing changes the flavour balance and the labelled strength.
The 10ml size is also a legal rule rather than a marketing choice. UK regulations cap nicotine e-liquid bottles at 10ml, which is why larger bottles you may see online are nicotine-free shortfills sold without nicotine. If a seller offers a large nicotine-containing bottle, treat it with suspicion.
Performance with a nic salt liquid is less about cloud size and more about three things: how quickly the nicotine lands, how the flavour holds up across a full pod, and how consistent the delivery stays as the coil ages. This section looks at each of those for Double Brew Cola Lime and Coco Lime.
Throat hit. At 20mg/ml in salt form you should expect a noticeable but rounded throat hit. It is firmer than a 10mg salt and clearly gentler than a 20mg freebase. The citrus component in both flavours can add a slight sharpness on the first couple of draws after a fresh fill, which usually settles once the coil is fully saturated. If the hit still feels scratchy after a few minutes, the usual cause is a device running too hot rather than the liquid itself.
Vapour production. Low-power MTL devices produce modest, tight clouds. That is by design. If you want to blow big plumes, this is the wrong liquid and the wrong device class, because 20mg salt at high wattage is both harsh and wasteful. For discreet vaping at a bus stop, in a car park or at the edge of a smoking area, the lower vapour output is an advantage.
How long a bottle lasts. A rough way to think about it: a typical refillable pod holds about 2ml. A moderate user often gets somewhere between half a day and a day and a half out of a pod, depending on how often they draw and how long each draw is. A 10ml bottle therefore tends to last:
For context on puffs, many 600-puff disposables held about 2ml of liquid. Using that as a rough yardstick, a 10ml bottle holds about the same amount of liquid as five of them, which supports the 2,500 to 3,500 puff estimate in the specifications. Refillable devices are more variable than sealed disposables, so treat these numbers as planning guidance and not a promise.
Consistency across a pod. Sweet liquids put more sugar-like residue on a coil than unsweetened ones, so flavour is usually strongest in the first half of a coil's life and gradually dulls. This is normal for sweet profiles from any brand. Replacing the coil or pod when flavour drops, rather than turning the power up to compensate, keeps the experience closer to what the liquid is meant to deliver and avoids the burnt taste that comes from overworking a tired coil.
The two flavours on this listing share a citrus lime thread but go in different directions. Flavour descriptions are inherently subjective and vary from person to person, so treat what follows as a guide to expectations and not a measurement.
Cola Lime. This is a soft-drink style profile. The base note is a caramel and spice impression of classic cola, with a lime wedge brightness that cuts the sweetness on the exhale. On the inhale you should get the darker, syrupy part of the flavour. On the exhale the lime moves forward and leaves a clean, slightly tart finish. It is closer to a fizzy drink poured over ice than to a dessert, although there is no actual cooling agent doing the work, so it does not feel icy in the throat.
Coco Lime. This one is rounder and creamier. A coconut note, closer to coconut cream than to desiccated coconut, forms the body, and lime slices through it so the flavour does not become cloying. Think of it as a tropical, slightly mocktail-like profile. The inhale is soft and smooth and the exhale brings a green citrus tang. Because creamy flavours coat the palate more, it tends to linger for a few seconds after each puff.
Which one suits you? If you want something crisp and refreshing, start with Cola Lime. If you want something smoother and a touch indulgent, start with Coco Lime. If you are undecided, the two are different enough that buying one of each and alternating is a reasonable approach, as long as you use separate pods or rinse your pod between flavours to avoid ghosting, which we cover in the how-to section.
Neither flavour is a menthol or ice profile. If you want a strong cooling sensation, you would be better served by a dedicated ice or mint liquid. If you want a tobacco-style flavour, this is not that either. These are flavour-led liquids aimed at people who have moved on from tobacco taste and want something that does not remind them of smoking.
For an e-liquid, build quality means the bottle, the cap, the label and how well the packaging protects the contents until you use it. A good bottle makes refilling less messy, and a bad one wastes liquid and makes a sticky mess in your pocket.
Bottle and tip. The 10ml bottle is plastic with a narrow nozzle. A fine tip matters because many pod fill ports are tiny, and a wide tip pushes liquid over the edge. When you first open the bottle, squeeze gently. Plastic bottles build a little pressure with temperature changes, and a hard squeeze on the first drip can send liquid across the pod.
Cap and safety features. UK rules require nicotine e-liquid to come in child-resistant, tamper-evident packaging. That means a cap that needs a deliberate push-and-turn or squeeze-and-turn action, and a ring that breaks when opened for the first time. If the ring is already broken or missing when your parcel arrives, do not use the bottle, and contact us with your order number and a photo.
Label information. A UK-compliant label shows the nicotine content and strength, the ingredient list, a health warning stating that the product contains nicotine, which is a highly addictive substance, the batch number and the supplier details. Products sold in the UK also have to be notified to the Medicines and Healthcare products Regulatory Agency before sale. Check your bottle against those basics when it arrives. Print should be clear, with nothing smudged or peeling.
Storage. To keep the flavour consistent and the liquid stable:
If you spill. Wipe up promptly with a paper towel and wash skin with soap and water. If liquid gets in your eyes or you swallow it, seek medical advice straight away and take the bottle with you.
Recycling the bottle. Once empty, the bottle is a small piece of plastic. Rinse it if your council recycling scheme asks for clean items, remove the cap and check your local guidance, because small plastics are handled differently from area to area. Empty bottles that held nicotine are best treated as ordinary plastic packaging rather than hazardous waste, but never pour leftover liquid down the sink.
A bottle of e-liquid has no battery of its own, so this section is about the device you pair it with. The battery in your pod kit affects how often you charge, how consistent your vapour is and, most importantly, how safe the setup is.
What battery size makes sense. Refillable pod kits that suit 20mg salts usually have built-in batteries between 400mAh and 1,000mAh. Because nic salts are designed for low wattage, a mid-sized battery goes a long way. As a rough guide:
Charging habits. Most current pod kits charge over USB-C and take somewhere between 30 and 90 minutes. Good habits make a real difference to battery life and safety:
Why lower power suits this liquid. A 20mg salt hits efficiently, so you do not need high wattage to feel satisfied. Most users find a setting around 10W to 15W is comfortable with an appropriate coil. Running a salt at 30W or more makes the vapour hotter, the nicotine hit harsher and the bottle empty faster. If your device has adjustable power, start at the low end of the manufacturer's recommended range for the coil, then nudge it up only if flavour feels muted.
End of life. Lithium-ion batteries must never go into household rubbish or normal recycling, where they can start fires in bin lorries and recycling plants. Take worn-out vape devices to a waste electrical drop-off point, such as a council recycling centre, or to a retailer takeback scheme in shops that sell vapes and electrical goods. Retailers that sell vaping products are required to offer takeback for waste electricals, so it is worth asking at the counter.
The coil is the part of a pod that turns liquid into vapour, and it is the single biggest influence on flavour and longevity after the liquid itself. Matching the right coil to a 20mg nic salt avoids most of the complaints people have about salts.
Resistance range. For 20mg salts, coils between about 0.6 ohm and 1.2 ohm work well. Higher resistance coils, around 1.0 to 1.2 ohm, run cooler at low power and give a tighter, more cigarette-like draw. Lower resistance coils, around 0.6 to 0.8 ohm, produce slightly more vapour and an airier draw, but use liquid faster and can feel strong at 20mg.
Standard wire coils versus mesh. Both are common in pod kits and both can work with Double Brew Cola Lime and Coco Lime.
Do not use sub-ohm tanks. Sub-ohm hardware, with coils below 0.5 ohm, is built for freebase liquids at low nicotine strengths and high wattage. Using 20mg salt in one delivers an excessive amount of nicotine with every puff, runs through liquid quickly and can make you feel unwell. Stay with MTL or restricted direct-lung pod systems designed for salts.
Compatibility. Most refillable pod kits from the major brands, such as the Vaporesso XROS and Oxva Xlim families, accept salt liquids of this kind, but always check your own device manual for liquid recommendations. Some pre-filled closed pods are not designed to be refilled, and attempting to refill them can void any warranty and make a mess. Only add liquid to pods that are clearly marked as refillable.
Coil lifespan. Sweet flavours leave residue. In normal use, expect a coil to last about one to two weeks, or somewhere between 20 and 40ml of liquid in a mesh design, depending on power and how you use the device. The signs that it is time to replace it are dulled flavour, a faint burnt note, a gurgling sound or vapour that feels thinner than usual. Priming a new coil properly, which we explain in the how-to section, is the best way to get the full life out of it.
This product is sold at one strength only: 20mg/ml. That is the highest strength allowed in the UK, so it is worth being straightforward about who it fits and who should think twice.
A general rule of thumb. Nicotine strength is about matching what your body is used to, so you are not constantly craving or feeling overwhelmed. These are general guidelines, not medical advice:
Signs your strength is too high. Dizziness, nausea, headaches, a racing heart, sweating or an uncomfortable harsh feeling in the chest after a few puffs are all signs you have taken in more nicotine than you wanted. Stop vaping, drink some water, get some fresh air and wait for the feeling to pass. If symptoms are severe or do not go away, seek medical advice. Next time, take smaller or shorter puffs, or choose a lower strength.
Signs your strength is too low. Constant cravings, taking a puff every few minutes, going back to cigarettes between vape sessions or feeling irritable and restless all suggest you may need a stronger setup. Before jumping up in strength, check the simple things: coil condition, power setting and whether you are drawing for long enough for the device to fire properly.
Reducing over time. Many people start on 20mg and step down over weeks or months to 10mg, then lower. If your goal is to stop nicotine entirely, local stop smoking services can offer behavioural support, and in some areas free vaping starter kits. Ask your GP, pharmacist or local council about what is available near you.
Who should speak to a doctor first. If you are pregnant or breastfeeding, have a heart condition, high blood pressure, diabetes or any other long-term health problem, ask your GP or pharmacist for advice before using nicotine products. Keep this product away from anyone under 18.
Not every product suits every person, and a shop that tells you otherwise is not being straight. Here is a plain assessment of the people these liquids make sense for, and the people who should look elsewhere.
These flavours are a good fit if you:
Choose Cola Lime specifically if you: miss sugary fizzy drinks, like crisp and slightly tart finishes, and want a flavour that clears quickly between puffs.
Choose Coco Lime specifically if you: prefer creamy, round flavours, enjoy tropical profiles and would like something that feels a bit more indulgent.
You should skip this product if you:
A note on switching from smoking. Moving fully from cigarettes to vaping is widely regarded as far less harmful than continuing to smoke, but vaping is not risk-free. The aim for most people is to use it as a stepping stone away from smoking, not to add a second habit on top. If you are not a smoker already, you do not need to start.
Refilling a pod is easy once you have done it a couple of times, but a few small mistakes cause most of the leaks and burnt hits people report. Follow these steps and you should avoid the common problems.
Step-by-step refill:
Everyday use tips:
Switching between Cola Lime and Coco Lime. Flavours carry over from one liquid to the next, an effect often called ghosting. If you want to alternate, the cleanest approach is to keep a separate pod for each flavour. Failing that, use up the pod to nearly empty, rinse it under lukewarm water, let it dry fully and fit a fresh coil if you can. Never mix two liquids in the same pod unless you are happy with an unpredictable result.
Where to vape. Check the rules for the place you are in. Many workplaces, trains, buses, hospitals and venues ban vaping, and some pubs and restaurants set their own policies. Never vape in a car with children or around pregnant women.
Almost every complaint about a nic salt liquid traces back to the device, the coil, the fill technique or the strength, not the bottle. Here are the usual problems and what to try.
When to stop and get help. If a device overheats, smokes, swells or makes unusual noises, stop using it immediately, disconnect it from any charger and place it on a non-flammable surface outdoors if that is safe to do. If you have chest pain, an unusual heartbeat, persistent coughing or breathing difficulties after vaping, speak to a medical professional.
Value is more than the price on the label. It combines how much you pay, how long the bottle lasts, how consistent the flavour is, and how much extra you spend on coils and pods. Here is how to think about it fairly.
Cost per day. A 10ml bottle that lasts a moderate user five to seven days works out at a modest daily cost. The easiest way to check your own number is to divide the current shelf price by the number of days a bottle lasts you, then add coil costs, which are typically a few pounds every one to two weeks. Compared with a pack-a-day cigarette habit, refilling a pod kit is considerably cheaper for most people. Compared with using several disposables per week, it is usually cheaper again, and disposables are no longer sold in the UK anyway.
Price context. UK vaping products duty on e-liquid applies from 1 October 2026, and that has pushed prices up across the whole 10ml category, not just for one brand. We recommend comparing the current price of this bottle with other 10ml 20mg salts at the time you order, rather than relying on older figures you may have seen.
How it compares with other ranges. Plenty of brands sell nic salts in the same 10ml, 20mg format, and the differences come down mainly to flavour menu, base formulation and price. Fairly, here is what we can say:
Where this product is weaker. It is available only in 20mg/ml, so it is not suited to light smokers who want a lower strength. It is a sweet liquid, so coils wear faster than with unsweetened or tobacco profiles. And we have no independent lab results to share, so the label is your reference for composition.
Our view. If you want a drink-style or tropical citrus flavour in a standard 10ml salt format and you are a regular smoker or existing vaper who needs 20mg, Double Brew Cola Lime and Coco Lime are reasonable, fairly priced options in a crowded category. If you want a lower strength, a menthol hit or very large flavour choice, look at other ranges first.
| Brand | Double |
|---|---|
| Product type | E-Liquid |
| Nicotine strength | 20mg |
| Available flavours | 1 (Cola Lime / Coco Lime) |
| 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 is the maximum strength allowed in the UK and suits people who smoke around 15 or more cigarettes a day, or who find lower strengths leave them craving. Lighter smokers often prefer 10mg or less, and non-smokers should not use this product at all. If you feel dizzy, nauseous or get a racing heart, stop and consider a lower strength.
We do not recommend it. A 20mg nic salt is designed for low-power mouth-to-lung pod kits and MTL tanks, usually between about 8W and 25W with coils of 0.6 to 1.2 ohm. In sub-ohm hardware it delivers far too much nicotine per puff, runs hot and harsh, and uses liquid very quickly.
The liquid itself has no battery, so charging depends on your pod kit. Most use USB-C with a standard phone-style charger, take 30 to 90 minutes, and should be charged on a hard surface and not left unattended for long periods. Stop using any device that swells, overheats or smells unusual.
Cola Lime is a crisp, fizzy-drink profile with a tart lime finish, while Coco Lime is creamier and rounder with a tropical coconut body. You can switch between them freely, but flavours can carry over in the same pod, so keep a separate pod for each or rinse and dry your pod before changing.
A 10ml bottle fills a typical 2ml pod about five times. Light users may get ten days or more, moderate users around five to seven days and heavy users roughly three to four days. It works out at an estimated 2,500 to 3,500 puffs, though device power, puff length and coil condition all change the figure.
For most regular vapers a refillable pod kit with a 10ml bottle costs less per day than using disposables, even after you add the cost of replacement coils. Disposable vapes are also no longer sold in the UK since 1 June 2025, so bottled salts for reusable devices are the standard alternative. Compare the current shelf price with other 10ml 20mg salts when you order.
Anyone under 18, anyone who has never smoked or used nicotine, and anyone who is pregnant or has a heart condition without first speaking to a medical professional should not use it. It is also a poor match for people who want a menthol or tobacco flavour, big clouds, or a low nicotine strength.
We deliver to addresses in the UK only, and nicotine products are sold to adults aged 18 and over. You may be asked to confirm your age at checkout or on delivery. Current delivery options, costs and cut-off times are listed on our delivery information page.
Do not use it. Contact us with your order number and a photo of the problem, and we will arrange a replacement or refund in line with your consumer rights for faulty or damaged goods. For safety and hygiene reasons, opened e-liquid bottles cannot normally be returned unless they are faulty.
Rinse the empty plastic bottle and put it in your household plastic recycling if your council accepts small plastics, and never pour leftover liquid down the sink. Used pods and coils usually go in general waste unless your council says otherwise, while devices with lithium-ion batteries must go to a waste electrical drop-off point or a retailer takeback scheme.
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.
Battery lasts me a full day easily. Charging is quick. Overall very pleased with the purchase.
This is now my daily. Flavour is spot on and it lasts well. Proper good product.
Does what it should. Smooth hit, no burnt taste even after a couple of weeks. Would recommend.
Been meaning to leave a review for a while. This has become my daily go-to. Highly recommend.
Did a comparison with another brand and this came out on top. Better flavour and better value.
Arrived well-packaged with next-day delivery. Taste is clean and authentic. Nothing to complain about.
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