Growing mushrooms in your old coffee grounds. Using coffee grounds that were previously a nuisance to baristas everywhere to grow gourmet mushrooms in the coffee grounds. Some mushrooms can be poisonous.
Grow gourmet mushrooms entirely on recycled coffee grounds. Grow-at-home mushroom kit lets you grow up to 1 lbs of gourmet, tasty oyster mushrooms per box harvest your first crop in as little as 10 days!