American shad + Butterfat

The American shad, Alosa sapidissima, is a species of anadromous fish distributed from southern Labrador to northern Florida. American shad are in family Clupeidae of order Clupeiformes. They are not closely related to the other North American shads. Rather, it seems to form a lineage that diverged from a common ancestor of the European taxa before these diversified Adult shad weigh between 3 pounds and 8 pounds and they have a delicate flavor when cooked. It is considered flavorful enough to not require sauces, herbs or spices. It can be boiled, filleted and fried in butter, or baked. Traditionally, a little vinegar is sprinkled over it on the plate. In the eastern United States, roe shad (females) are prized because the eggs are considered a delicacy.

Butterfat or milkfat is the fatty portion of milk. Milk and cream are often sold according to the amount of butterfat they contain. [Wikipedia] See also "dairyforall.com":http://www.dairyforall.com/butteroil.php