Cooking Fat Made From Mediterranean Tree Fruit

Puzzle 18 of No Refrigeration Needed Pack

Question is: Cooking Fat Made From Mediterranean Tree Fruit

and the answer is: OLIVEOIL

Word Meaning:

OLIVE OIL — A vegetable oil, pressed from olives, and used in cooking and as a salad dressing; it is high in unsaturated fatty acids.

Definitions from Wiktionary.