Wafer Chocolate cookies refers to crispy chocolate flavored wafers that are prepared using flour, cocoa, sugar, egg whites and butter. A firm dough is prepared by mixing all the ingredients, which is chilled and then sliced into wafers and baked in an oven until done. Wafer Chocolate cookies can be stored in air tight containers and can last up to 10 days. The wafer chocolate is well liked by kids and is also popular as a tea time snack.