Speed is even better for that (at least equal), also low doses of deliriants.
Back to alcohol, after years of drinking to excess, up to ~double lethal dose (almost 1,5L of 40% in an hour for example, without tolerance) I came to the conclusion that 100 - 150 ml at once or in few minutes is actually the most optimal dose. Better late than never heh.
Stick to high quality vodka, it's closest to the purest form of alcohol between 40% spirits and the healthiest heh. Don't bother with beer and wine, those work for social situations and sipping but if you are clearly after the altered state of mind, the one from booze is much higher quality and you don't have to consume liters of fluid just to get drunk. Wine is also really low quality alcohol (we have cleaning products that give better hangovers than that) and more toxic in higher doses, no matter what the French say.