This Tweaker is the sourest of them all, at least of the one that I've reviewed, and unfortunately it's paired off with the shot's hyper saccharinity, one that's equally as syrupy and almost cloyingly so. There is a flavour to be witnessed here, yes, one obviously of berry, however the blend is dull despite all the acidity and sweetness. No single fruit is the focus, instead we're exposed to a lackadaisical monkey mash of blue, black, and raspberry, all underdeveloped and insultingly emotionless. But with a shot, simplicity isn't much of a fault, as they're designed for rapid consumption, so Tweaker Berry really isn't all that bad, especially since you can painlessly finish it in just a few sips.
Each bottle contains a decent selection of various herbs, chemicals, extracts and stuff, including unknown quantities of caffeine. The energy cocktail kicks well enough, three hours if generous, and there wasn't any of the feared side effects. All in all, Tweaker Berry is a functional shot who's bitterless taste and cheap price outweigh many of its quirks.