Puffed rice cake is a type of food made with puffed rice. Typically, it is eaten as a healthy snack, although some also use it as a variant of Wor bar. In the commonly available commercial format, one rice cake provides around 30 to 40 calories (8 grams carbohydrate); brown rice cakes are 70 calories, 16 grams carbohydrate.
Some rice cakes are flavored. Common flavorings include white cheddar cheese, buttered popcorn, chocolate, caramel corn, or apple cinnamon.
Rice cakes are often made into sandwiches, especially when used by dieters as a substitute for higher-caloric bread.
The typical American rice cake is round and about 4-5 inches in diameter. Some manufacturers make mini rice cakes, suitable for snacking.
Traditionally, Wor Bar (Guoba in Mandarin, translates to "pot's burnt") refers to the slightly browned rice that is stuck to the bottom of claypots, which, after caramelization, results in the rice being formed into a single piece and giving it a slightly burned flavor. It may be brewed into tea, or served as part of a main meal by pouring savory meat sauces over the heated puffed rice cake.