Quack's Juice Factory concentrate is an American range of flavour concentrate designed and manufactured in New York for DIY e-liquid, in the gourmand family: the Goose Juice version combines custard, vanilla and caramel with a note of pepper. It is diluted at 20% in a 50/50 base, then left to steep for about 15 days. Made in the USA. Bottle size: 60 ml. Recommended dilution: 20%.