Sweetbread

SWEETBREAD SANDWICH: Cook sweetbreads until tender. When cold, remove skin, chop fine, season with salt and pepper, add one cup of finely chopped celery, and a dash of mayonnaise dressing; spread on thin slices of lightly buttered white bread. Cover with another slice and garnish with an olive.

The pancreas of an animal when cooked for consumption is known as a sweetbread.