If you want go up to 20% - maybe add sweetener or more strawberry? I mix 50/50 - 15% flavor I know this flavor is over 50% VG base. It yummy to me, but flavor is subjective unfortunately.
You can play around with it and add what ever you want - someone said they thought Mothers Milk had graham in it so maybe try that too.
You can play around with it and add what ever you want - someone said they thought Mothers Milk had graham in it so maybe try that too.