Cake donuts are little pillows of breakfasty joy, made from a cake-like batter that's leavened with baking powder. They're fluffy, tender, and often have a wide range of flavors and toppings.  Old-fashioned donuts are a special kind of cake donut. They're known for their rustic, crackly edges and a dense, almost crumbly texture.  Crullers, on the other hand, are a whole different donut story. They're twisted, lacy, and fluted, usually made from choux pastry, the same stuff used for éclairs and cream puffs. Crullers have a light, airy interior and a delightful crunch on the outside.