growing mushrooms on logs

hello, I got some walnut wood, what kind of mushrooms do you recommend to grow on walnut, I saw that it works well oyster mushroom

Although I've never directly inoculated walnut logs with oyster spawn, I've seen oyster mushrooms grow from English walnut logs I've had just laying around. I think oyster mushrooms are your best bet for this kind of walnut. And if you live in the US, Field & Forest mushrooms have a wide selection of oyster mushroom spawn varieties and species to try. Their catalog also states that black walnut logs are  "satisfactory" for growing lion's mane and comb tooth. So if you have black walnut, you might want to try lion's mane instead. Good luck!

I am fortunate in that if I cut down a dead alder tree- and I am cutting down many this rainy season- the oysters will just grow heavily within weeks.

I have better results if the log is not completely flat on the ground but elevated on one end a few feet up, and if I score the bark in a few places.

Best of luck with your cultivation!