When you’re drinking with someone, oldest person pours first, make a whirlpool in the bottle, tap the bottom with the palm of your hand firmly, open it then poke the top of the bottle between your first and second digit (ideally spilling some), pour with two hands covering the label, never pour a drink for yourself, the first drink is taken as a shot (the rest can be shot or sipped), turn away from/avoid eye contact with the person who poured your drink if they’re older than you. It’s a whole thing but not mandatory haha