Muffins in the United States are similar to cupcakes in size and cooking methods, the main difference being that cupcakes tend to be sweet desserts using cake batter and which are often topped with sugar frosting. Muffins are available in both savory varieties, such as cornmeal and cheese muffins, or sweet varieties such as blueberry, chocolate chip, lemon or banana flavours. Muffins are often eaten as a breakfast food. Coffee may be served to accompany muffins. Fresh baked muffins are sold by bakeries, donut shops and some fast food restaurants and coffeehouses.