Cooking Medium for Roast Potatoes
Puzzle 3 of Animals with Weird Names Hard Pack
Question is: Cooking Medium for Roast Potatoes
and the answer is: GOOSEFAT
Word Meaning:
GOOSE — Any of various grazing waterfowl of the family Anatidae, which have feathers and webbed feet and are capable of flying, swimming, and walking on land, and which are generally bigger than ducks.
Definitions from Wiktionary.