I don't think you can generalize this across Europe. Cans and bottles have/had "preferred sizes" (hence 330mL, 250mL, 500mL being common), but there's no Europ

I don't think you can generalize this across Europe. Cans and bottles have/had "preferred sizes" (hence 330mL, 250mL, 500mL being common), but there's no European standard for how much you get in a bar or restaurant.