Butter, bacon drippings or lard are commonly used fats. Common types of fat used include butter, vegetable shortenings, lard and margarine. Carnitas is pork cooked in lard flavored with orange rind. Pie crusts made with lard tend to be flakier than those made with butter. Cooking grease such as lard, butter and goose grease, were used to moisturize the hair. It is similar to lard, tallow and schmaltz. However, even this bread is often heavily fortified with lard, shortening or butter. Tyrolean food often contains milk, cheese, flour and lard. It is usually made with white flour, lard or olive oil, salt and water. Cretors's machine popped corn in a mixture of one-third clarified butter, two-thirds lard, and salt. Long chain fats are exemplified by tallow (lard) whose chains are 17 carbons long. Lard or fried onion oil is then added for fragrance. Up to 2000-year-old containers of butter or lard have been found. Others use lard, or animal fats. In general lard is similar to tallow in its composition.