Peach - 10% Lorann's Peach, 1 drop sweetener per 10ml, 1 drop menthol or lemon
juice or TPA sour per 10ml.
Plain menthol - 15 drops TPA menthol per 30 ml for strong menthol, which is about 2.5% of a 10% solution. NOT 2.5% menthol crystals. 8 drops sweetener per 30ml, but not necessary.
Strawberry-Pineapple - 5% each TPA Strawberry and Lorann's Pineapple. 1 drop sweetener per 10ml. 1-2 drops menthol or something to make it "brighter" per 10ml.
Disclaimer: You may not like these : ) I just wanted to give a few since no one else has replied. I have a menthol fixation, so pretty much everything is good to me as long as I don't mix the fruit too strong and add some menthol. They all have a slight pepper flavor at the nic levels I use.