A plain sandwich is made up of two slices of bread, preferably a day-old bread, toasted if desired, and on which butter can be readily spread.
Regular cold sandwich
It make use of one kind of bread with the filling on top. The slices of white bread can be cut into squares, triangles, or rounds.
Open-faced sandwiches
Small fancy sandwiches made from light, delicate ingredients and bread that has been trimmed of crusts. And may be made ahead of time and frozen.
Tea sandwiches