Turns out that I'm vaping 12% Alcohol. My formula is simple 20% -25% Cooks Vanilla Peppermint Extract + VG and nic in VG base. I Called Cooks and they said the extract is 47.5% Alcohol. Using a ratio of 25% extract simply gives the best flavor. Any times I've tried to use less and dilute with water I haven't liked the taste.Very much so. People often add a bit of alcohol to their eliquids to increase TH; 20% alcohol sounds excessive to me. Why so much? You can dilute your VG with distilled water (10-15%) or distilled water and just a few drops of alcohol --vodka or everclear (PGA) are usually recommended.