A descriptor used culinarily for a "sandwich" consisting of one slice of bread topped with various ingredients such as sliced meat, cheese, pickles, etc. Open-faced sandwiches are very popular in Scandinavia, where they've become an art form with elaborately arranged and decorated combinations. For the most part, open-faced sandwiches are cold, but there are also hot ones, which usually consist of bread topped with meat slices and gravy.