The examples and perspective in this article deal primarily with the United Kingdom and do not represent a worldwide view of the subject. Please improve this article and discuss the issue on the talk page.(December 2011)
A cooking apple is an apple that is used primarily for cooking rather than eating raw. Cooking apples are larger, and can be tarter than eating varieties. Some varieties have a firm flesh that doesn't break down much when cooked. The British grow a large range of apples specifically for cooking, but such varieties are used worldwide, although apples eaten raw are also used for cooking purposes. Many apples are dual-purpose.
It is commonly believed that eating cooking apples raw will make a person sick. In reality cooking apples are harmless raw and are just varieties of apples whose characteristics are well suited to cooking. This myth is simply a product of cooking apples' tart taste and the possibility of its bitterness not sitting well in the stomach.