Dough prepared for dumplings may include potatoes, and while the combination of fruits, jams and cheeses varies among households, plums ('), apricots or strawberries (') are common. The finished dumplings are boiled and often garnished with butter, poppy seeds or grated cheese, and a sweetener (traditionally dried and powdered pears, but sugar is used in modern adaptations). Also filled with fruit or jam (and sometimes garnished with poppy seeds) are the Czech crepes called '. Traditional Czech sponge cake ('), served most often for breakfast, is made with cream, eggs and sugar and seasonal fruits, especially whole cherries.