You can use any variety of mushrooms. I like to use oyster and beech mushrooms (tip: you can find a huge variety of well priced mushrooms at Asian grocery stores). Top pasta with chopped walnuts when serving. It adds a delicious crunch. If you’re using canned tomatoes, buy Eden brand because they don’t use BPA in their cans. You can use full fat or light coconut milk, just make sure it is the kind in the can.