There are two types of ring doughnuts, those made from a yeast-based dough for raised doughnuts, or those made from a special type of cake batter. Yeast-raised doughnuts contain about 25% oil by weight, whereas cake doughnuts' oil content is around 20%, but they have extra fat included in the batter before frying. Cake doughnuts are fried for about 90 seconds at approximately , turning once. Yeast-raised doughnuts absorb more oil because they take longer to fry, about 150 seconds, at . Cake doughnuts typically weigh between , whereas yeast-raised doughnuts average and are generally larger, and taller (due to rising) when finished.