Canada: beer dregs mixed with coffee grounds to cultivate mushrooms and promote circular economy

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The "Blanc de Gris" mushroom farm in Montreal, Quebec, Canada, uses coffee grounds and beer grounds to produce culture medium for Pleurotus ostreatus, Pleurotus eryngii and other varieties all the year round. According to the founder, Ms. Roy, "the mushroom farm insists on recycling, so as to reduce cultivation costs and promote environmental sustainability. Every week we harvest 200kg fresh mushrooms, which are sold to nearby high-end restaurants. Share our value with diners. "