Menthol is the main type of cooling that people think of when they start mixing e-liquid. It has a minty taste and feels a little bit cold on the inhale and exhale, but not too dramatic.

If you're making a standalone menthol flavour, we recommend trying our menthol concentrate at 8% and adjusting to taste from there. If you wanted to add a cool, minty flavour to a recipe such as a fruit recipe, we'd suggest starting at 0.5% then adjusting to taste.

Koolada differs to menthol in that it doesn't have a taste, it's just cold. The cold feeling of Koolada is felt at the back of the throat rather than in the mouth. Some people report getting a slight chemical flavour, but most people don't.

It can slightly mute the flavour in a mix, especially if used at higher percentages. Therefore, we recommend using it when you'd like to give a hint of cooling rather than a blast of ice so it can be used at lower percentages. Generally 0.5% is a good place to start, however we generally wouldn't go much above 1 or 1.5%.

WS-23 is more similar to Koolada than menthol. It has no taste and creates a cold feeling both in the
back of the throat and in the mouth. When comparing WS-23 to Koolada, it causes less muting of flavours and can be used effectively to turn fruits into frozen versions.

We've found when mixing up a recipe with
WS-23, it takes a couple of days to dial back the cooling effects. To begin with it is a noticeable amount colder than it will be after a week. As a guide, 0.5% of WS-23 in a mix will give a hint of cold, whereas 2% will give a Malaysian-style ice effect.