Mr Blue by Lost Mary Nic Salts: The Mysterious Blue Slushie in Salt Form
Ask ten vapers what "blue" tastes like and you will get ten slightly different answers, and that is exactly the fun of Mr Blue. It is the classic mixed-berry slushie flavour, the deep-blue crushed-ice drink of childhood summers, rebuilt as a nic salt e-liquid you fill into your own refillable pod or device. Because this is a salt rather than a prefilled pod, you control the kit, the airflow, and the top-up, and Mr Blue rewards that control with one of the most moreish, hard-to-place fruit profiles in the range.
This is a flavour that lives on vibe as much as on any single identifiable fruit, so let us pin down what it actually tastes like and how to get the most out of it.
Decoding the Blue: The Taste in Full
The first inhale is instantly recognisable to anyone who has had a blue slush. There is a cool, candied berry rush that reads as raspberry and blueberry tangled together, with that unmistakable "blue sweet" character sitting on top. It is bright, sugary, and playful, and on a salt it comes through smooth thanks to the softer throat feel that nicotine salts are known for, so even at a satisfying strength it stays easy on the throat.
Through the mid-vape, the berries deepen and a light tartness surfaces. This is where Mr Blue stops being one-note: underneath the candy sweetness there is a genuine fruit tang, a hint of the sharpness you get from real mixed berries, which keeps the whole thing from tipping into pure sugar. A gentle cooling runs alongside it, not a heavy menthol but the frosty slush-machine chill that the flavour is imitating. That cool thread is essential to the illusion; without it, blue slushie is just berry, and with it, the drink comes alive.
The exhale is where it earns its keep. You get a rounded, refreshing berry finish with a clean, faintly icy tail that leaves the mouth feeling cool and rinsed. The aftertaste is sweet but not sticky, a lingering blue-raspberry note that fades at a comfortable pace and makes the next pull inevitable. It is the vaping equivalent of chasing the last cold sip at the bottom of the cup.
Who It Is For and When It Hits Hardest
Mr Blue is tailor-made for sweet-tooth vapers and anyone who loves the nostalgic slushie and blue-sweet family of flavours. If you have enjoyed blue-raspberry, mixed-berry ice, or candy-style fruits before, this is squarely in your lane. As a nic salt in a compact pod setup, it also suits people who want a genuinely satisfying nicotine hit in a small, low-fuss device, whether they are newer to vaping or a committed pod user who refills rather than buys disposables.
The flavour flexes to the moment more than you might expect:
- Hot days and summer, where the icy slush character is at its most refreshing and relevant.
- As an all-day sweet fix, since the berry base is easy to return to again and again.
- On the move, in a pocket-friendly refillable device, when you want reliable flavour and a quick top-up.
- Whenever you crave something fun rather than sophisticated, because Mr Blue is unapologetically a treat.
It is less of a natural fit for anyone chasing a realistic single-fruit or a tobacco-style flavour. This is candy-shop territory, and it knows it.
How It Stacks Up and What to Rotate With
Compared with a straight blueberry, Mr Blue is sweeter, cooler, and more confectionery, trading realism for that addictive slushie fun. Set against a mixed-berry menthol, it is a little more candy-led and a little less sharp, with the emphasis firmly on the blue-sweet nostalgia. If you have tried other "blue" flavours across brands, you will recognise the family, though the balance of chill to sweetness is what makes each one feel different, and this one keeps the cooling in a friendly, medium range rather than going full ice.
Candy-sweet flavours are among the quickest to dull your palate, so rotation matters here more than most. To keep Mr Blue tasting vivid:
- Alternate with a tart citrus salt such as lemon or lime, which scrubs the sweetness off your palate and makes the berry pop again.
- Keep a plain menthol or a fruit-menthol on hand for when you want the cool without the candy.
- Bring in a non-berry fruit like apple or a tropical blend to give your taste buds a proper change of scene.
Because you are filling this yourself, keeping two or three bottles in rotation is easy and cheap, and it is the single best way to stop a favourite flavour from fading into background noise.
Practical Notes: Strength, Getting the Truest Taste, and Storage
As a UK nic salt, Mr Blue is capped at 20mg/ml (2%), which is the legal ceiling and the strength many people reach for when they want a firm, quick-settling hit from a small device. Salts are formulated for exactly this kind of mouth-to-lung pod use, so pair it with a higher-resistance coil and a tighter airflow to get the smoothest, most flavour-dense result. Wide-open, high-power airflow tends to thin candy-berry flavours out and can make the sweetness harsh, so snug it up.
To taste it at its truest, prime a fresh coil properly: add a few drops of liquid directly onto the coil, fill the pod, and let it stand for several minutes before the first vape so the wick is fully saturated. This protects both the flavour and the coil, and it is the difference between a crisp blue slush and a faint, slightly burnt first pull. The flavour is at its best on a well-wicked coil at a moderate power; push the wattage too high and the delicate cool note is the first thing to disappear.
Store the bottle upright, tightly capped, and out of direct sunlight and heat. Sweet berry and menthol notes both fade with light and warmth, so a cool, dark cupboard keeps Mr Blue tasting as intended for longer. On value, self-filling a salt is one of the most economical ways to vape a flavour you love, and you get the same consistent blue slushie every time rather than variation between products.
Who Might Not Get Along With It
If sweet, candy-style flavours are not your thing, Mr Blue will likely be too sugary for you, and a realistic single fruit or a menthol-tobacco would suit you better. Heavy-ice devotees may also find the cooling a bit gentle, and anyone who prefers subtle, understated profiles could find the blue-sweet character a little loud. For the many people who simply love a nostalgic slushie, none of that will matter.
Mr Blue FAQ
What flavour actually is Mr Blue?
It is the classic blue-raspberry slushie, a mix of candied berries with a frosty, crushed-ice character. There is no single real-world fruit called blue; the profile is built to recreate that nostalgic blue-sweet drink, blending raspberry and blueberry-style notes with a cool finish.
Is it very icy or just lightly cool?
It sits in the medium range. There is a definite chill that mimics a slush machine and lifts the berries, but it is not a full-on menthol assault. If you want more ice you can rotate in a dedicated menthol, and if you dislike cooling entirely this may feel slightly too fresh.
What strength should I choose and how do I set up my device?
UK nic salts top out at 20mg/ml (2%), a common pick for a firm, quick hit in a small pod. Run it in a mouth-to-lung setup with a higher-resistance coil and tighter airflow at moderate power, and prime a fresh coil before use, for the smoothest throat feel and the fullest slushie flavour.
