The SC mini-bottle law has an interesting history. It was originally promoted by the Baptists to prevent alcoholism by limiting how much you could get in your glass (open-pour became illegal) The waiter or bartender had to crack the seal on the mini-bottle in front of you and pour the entire contents into your glass. No more, no less.

This quirk in the law caused an unintended side-effect. Mixed drinks became very popular because now your Manhattan had quite a bit of alcohol in it -- a full mini bottle each of whiskey and vermouth.