Using coffee grounds to grow mushrooms has many clever uses; how much is a ton of spent mushroom substrate?
What are some of the clever uses of coffee grounds? Coffee grounds are usually treated as waste, but they actually have many clever uses, such as being used to remove odors, and they can also be used as soil for growing mushrooms. Coffee grounds contain a large amount of antioxidants and are very suitable as a nutrient source in soil. Let's take a look together below!

In the UK, someone collected coffee grounds that coffee shops were originally going to discard, buried mushroom spawn into the grounds, and the mushrooms that grew were even bigger than a palm. Coffee grounds became the best fertilizer for growing mushrooms.
The counter staff kept grinding beans nonstop to meet the needs of all the customers who came in to buy coffee, and the coffee grounds left after brewing coffee are, to some people, gold that makes money. Mushroom growing company employee: "Thank you very much!"
They throw the coffee grounds into the vehicle compartment, then continue on to the next place to collect more. A business operator in the UK discovered that coffee grounds are actually fertile ground for growing mushrooms. The operator divided the collected coffee grounds, 200 kg in total, into small bags, then buried mushroom spawn into them. Mushroom growing company employee: "We leave it for at least one month. The growing environment here is just like the wild, warm, humid and dark."
This light orange mushroom, bigger than a palm, was grown using coffee grounds. This peculiar growing method also makes people curious: will this mushroom taste like coffee when eaten? Mushroom growing company employee: "In fact, only the growing environment affects the taste and texture of shiitake mushrooms."
The mushrooms they grow are also supplied to restaurants in the city as ingredients. The operator said that because they saw several tons of coffee grounds being discarded as garbage in the city every day, they felt it was very wasteful, so they changed their thinking and treated coffee grounds as a usable resource, and also found a new business opportunity for themselves, opening up a new source of income.
How much is a ton of spent mushroom substrate? Generally this costs nothing. If you do buy it, it is not very much either, generally around thirty or forty.