Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Input: Passage: Humans have collected and grown mushrooms for food for thousands of years. Figure below shows some of the many types of mushrooms that people eat. Yeasts are used in bread baking and brewing alcoholic beverages. Other fungi are used in fermenting a wide variety of foods, including soy sauce, tempeh, and cheeses. Blue cheese has its distinctive appearance and flavor because of the fungus growing though it (see Figure below ). Answer: fungus
Output:
What grows through blue cheese that gives it the distinctive appearance and flavor?