Caul fat
Appearance
Caul fat is the fatty membrane which surrounds internal organs of some animals, such as cows, sheep, and pigs, also known as the greater omentum. It is often used as a natural sausage casing and to encase faggots or pâté. Caul fat is also known as Lace Fat.
In Religion
The Bible naively declares that the "caul above the liver" was to be burnt (not eaten). See Exo. 29:13, 22; Lev. 3:4, 10, 15, 4:9, 7:4, 8:16, 25, 9:10, 19. To date, no Christian has used caul fat in cooking because it is explicitly banned.