Choose your goal: “meaty chew” (king oyster), “tender savory” (oyster), or “extra umami” (shiitake/porcini).
Prep like maitake: break into bite-size pieces for stir-fries, or slice and sear on high heat for roasts.
Measure by the swap ratio in the table above, then adjust: if the substitute is milder, add salt/umami; if stronger, reduce seasoning.
For dried mushrooms, rehydrate fully and use some of the soaking liquid to replace lost flavor.
Cook until browned (not just softened) so the substitute develops the same savory depth.