Question 1

True or false: Coffee grounds are useless after brewing and must go in the trash.

Accepted Answer

False. Used coffee grounds can deodorize, exfoliate skin, or enrich compost—they're far from useless.

Question 2

True or false: You should always peel potatoes before boiling them for mash.

Accepted Answer

False. Boiling potatoes with skins on retains nutrients and flavor; you can mash them skin-on for rustic texture.

Question 3

True or false: You can freeze citrus peels to zest later instead of tossing them.

Accepted Answer

True. Citrus peels freeze well and retain flavor; grate them directly from frozen for zest in recipes.

Question 4

True or false: Stale bread makes better croutons and breadcrumbs than fresh bread.

Accepted Answer

True. Stale bread absorbs less oil and toasts more crisply, yielding superior texture for croutons and crumbs.

Question 5

True or false: Vegetable peels can be turned into a flavorful stock powder by dehydrating and grinding.

Accepted Answer

True. Dried peels like carrot or onion skins grind into a concentrated seasoning powder, reducing waste.

Question 6

True or false: Freezing herbs in oil ruins their flavor and makes them mushy.

Accepted Answer

False. Freezing herbs in oil preserves flavor well and prevents mushiness, especially for pesto or sautéing.

Question 7

True or false: Eggshells are too brittle to be used in cooking or gardening.

Accepted Answer

False. Ground eggshells add calcium to soil or can be used as a grit for birds; they're not too brittle.

Question 8

True or false: Broccoli stems can be spiralized into vegetable noodles for a zero-waste meal.

Accepted Answer

True. The firm texture of broccoli stems allows them to be spiralized into noodle shapes, offering a low-carb alternative that uses the whole vegetable.

Zero-waste cooking Trivia Questions