Mix Big Mouth concentrates at 8% in a 70/30 PG/VG base, 10% at 50/50, 12% at 30/70 and 15% in full VG, then let the liquid steep for 3 to 7 days before use. For 100 ml of liquid on a 50/50 base, that is 10 ml of concentrate and 90 ml of base. The calculator below works out any other amount.
Big Mouth concentrates, also called Big Mouth aromas, are undiluted flavourings made on a PG base. They are always mixed into a base and never used on their own. This guide covers the official dosage, the reason it changes with the base, a step-by-step method, steeping and storage.
Big Mouth mixing calculator
At 10%, one 10 ml bottle makes 100 ml of liquid and one 30 ml bottle makes 300 ml.
Choosing a base fills in the recommended Big Mouth dosage; you can change the percentage to taste. The final ratio counts the concentrate as PG.
Big Mouth dosage by base
The recommended dosage is the same for every Big Mouth concentrate line, from Classical to Ice Hit and Tasty. What changes it is the base you mix into.
| Base (PG/VG) | Dosage | Concentrate per 100 ml | One 10 ml bottle makes | One 30 ml bottle makes |
|---|---|---|---|---|
| 70/30 | 8% | 8 ml | 125 ml | 375 ml |
| 50/50 | 10% | 10 ml | 100 ml | 300 ml |
| 30/70 | 12% | 12 ml | about 83 ml | 250 ml |
| Full VG | 15% | 15 ml | about 67 ml | 200 ml |
Why the dosage rises with VG
PG (propylene glycol) is thin and carries flavour well. VG (vegetable glycerine) is thicker and slightly sweet, and it softens how strongly a flavour comes through. The more VG in the base, the more concentrate it takes to reach the same intensity, which is why the dosage climbs from 8% in a PG-heavy base to 15% in full VG.
Because Big Mouth concentrates are PG based, they also shift the final ratio a little towards PG. At 10% in a 50/50 base, the finished liquid is about 55/45 PG/VG. The calculator shows the final ratio for any mix.
What you need
- A Big Mouth flavour concentrate, in a 10 ml or 30 ml bottle
- A PG/VG base in the ratio you prefer
- An empty bottle for the finished liquid; 10 ml Big Mouth concentrates include an empty mixing bottle
- A syringe or graduated cylinder for accurate measuring, especially for small batches
How to mix, step by step
- Choose the base. Pick the PG/VG ratio first, because it sets the dosage.
- Work out the amounts. Use the calculator or the table above.
- Add the concentrate first. Measure it into the empty bottle, so small amounts are not lost on the walls of a full bottle.
- Top up with base. Add the measured base, leaving a little space at the top of the bottle.
- Shake well. Close the bottle and shake for one to two minutes until the liquid looks even, with no streaks.
- Label it. Write the flavour, the dosage and the date on the bottle.
- Let it steep. Store it as described below for 3 to 7 days before use.
How long to steep
Steeping is the rest period after mixing, when the flavour blends fully into the base. Big Mouth recommends 3 to 7 days. Fruit, citrus and cooling profiles are often ready at the shorter end; dessert, bakery and tobacco profiles, such as the Tasty and Yummy lines, benefit from the full week.
Keep the bottle closed, in a cool and dark place, and give it a short shake once a day. A liquid that tastes flat or sharp straight after mixing usually rounds out over these days. Steeping times for each flavour line are in the Big Mouth steeping guide.
Adjusting to taste
The recommended dosage is the starting point. If you want a stronger or lighter result, mix a small test batch and change the dosage by 1 to 2 percentage points at a time, steeping each test before you judge it. More concentrate is not always better: going far above the recommended dosage can make a flavour taste muted or harsh rather than stronger.
Storage and safety
- Never use a concentrate undiluted. It is a flavouring for mixing only.
- Store concentrates and finished liquids in a cool, dark place, away from heat and direct sunlight.
- Keep bottles closed and out of reach of children and pets. Big Mouth concentrates are supplied with child-resistant caps.
- Products are intended for adults only.
Concentrate, Aroma-Shot or Aroma-Shot XL?
A concentrate is the flavour on its own, for mixing freely in any amount. An Aroma-Shot is the same flavour already measured into a larger bottle in 60/12 ml or 120/15 ml, so you only add base. Aroma-Shots XL do the same with 10 ml of flavour in a 120 ml bottle. Most flavours are available in several of these formats.
Frequently asked questions
How much Big Mouth aroma goes into 10 ml of liquid?
0.8 ml for a 70/30 PG/VG base, 1 ml for 50/50, 1.2 ml for 30/70 and 1.5 ml for full VG.
How much liquid does one bottle of concentrate make?
A 10 ml bottle makes between about 67 ml (full VG, 15%) and 125 ml (70/30, 8%). A 30 ml bottle makes between 200 ml and 375 ml.
Can a concentrate be used without mixing?
No. Concentrates are undiluted flavourings and must always be mixed into a base at the recommended dosage.
How long should Big Mouth liquids steep?
3 to 7 days. Dessert, bakery and tobacco profiles benefit from the longer end.
Is a Big Mouth aroma the same as a concentrate?
Yes. In much of Central Europe the same product is called an aroma (Aromen in German, aromaty in Polish and Czech).
Does the dosage differ between flavour lines?
No. The same dosage applies to all Big Mouth concentrate lines; only the base changes it.
For shops
This guide is the official Big Mouth mixing reference. Shops are welcome to link to it from their product pages or share it with customers. Wholesale accounts for vape shops and distributors can be opened on the account page; see the wholesale terms for ordering conditions.