I think Ken has a good point. Both wine caps and blewits can use leaves as part of their substrate. Blewits would probably use a higher proportion. Wine caps grow best on a substrate of mostly hardwood chips.
However, they are mostly grown outside, in a patch, because they are the types of mushrooms that require some form of bacterial interaction in order to produce well. People have problems when they try to produce them using only sterilized methods. Scientists don't understand the precise interaction very well, but it seems to be rather complex. It makes sense when you think that they've been growing in nature for a million years or more.
Wine caps in general are much easier to grow than blewits. I've tried both. Wine caps are generally considered the easiest mushroom to cultivate outdoors in a patch.
We bring in leaf mulch from other, non-botanically related plants in our community to our yard. We try to use all leaf and plant growth as mulch in the yard. That's the idea of
permaculture: mimic nature and its wisdom, most of which we probably have not yet discovered.
Nutrition comes from the biological digestion of organic material, creating diverse life in the soil and in what you eat, then in you.
John S
PDX OR