Well, usually. There exists a unique subset of cocktails that depends on keeping ingredients distinct: the layered drink.

Here are twelve cocktails from industry professionals that will at a zing to every Valentine's Day and romantic date night to ...

"In general, I find most layered cocktails to be for looks but not that enjoyable to drink (or mixing them together first is required)," says Hughes. The point of a cocktail, after all, is to ...