Coffee-Grounds Mushroom Kit
Our partner FoodCycle+ turns coffee grounds into a home mushroom kit, the Goo Goo Cube (Mushroom Farm Kit). The grounds are used as the growing substrate. After the kit is opened, mushrooms can be harvested in about 10 days. What is left of the substrate after harvest can be used as compost.
Feedstock: coffee grounds
Coffee grounds are the food waste left after brewing coffee in cafés and food outlets. Our partner FoodCycle+ uses the grounds as mushroom substrate and packs them into a home mushroom kit.
Product: Goo Goo Cube
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Goo Goo Cube is FoodCycle+'s home Mushroom Farm Kit. The packaging says you can harvest at home, with a crop in about 10 days.
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Inside the box is ready substrate. After you open and use the kit as the instructions say, mushrooms grow from the substrate.
How the loop works
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Collection: Coffee grounds are collected from cafés and food outlets.
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Substrate: The grounds are used as mushroom substrate and packed into the kit.
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Home growing: The user opens the kit and grows mushrooms at home as instructed.
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Harvest: A crop can be harvested in about 10 days.
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Spent substrate reused: What is left after harvest can be used as compost for plants.
The cycle on the packaging is: coffee grounds → mushroom substrate → growing and harvest → spent substrate as compost.
Suitable uses
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Home growing: growing and harvesting mushrooms from food waste at home
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Education: showing participants that coffee grounds can become mushroom substrate
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Corporate and event displays: a physical example of a food-waste loop
Environmental benefits
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Food waste reused: Coffee grounds stay out of landfill and become substrate for mushrooms.
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Done at home: After the kit is opened, growing, harvest and using the spent substrate as compost can all be done at home.
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Local waste, local use: The grounds come from local food outlets and return to users as a mushroom kit.
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