Thinly slice the king oyster mushrooms using a peeler.

Place the sliced mushrooms into a microwave-safe steamer and microwave for 4 minutes.

After cooking, carefully drain all the excess water from the mushrooms.

Season the drained mushrooms with perilla powder, soy sauce, and sesame oil.

Mix all the seasonings and mushrooms together until well combined.

Optionally, add tofu noodles or pasta to the seasoned mushrooms.

Sprinkle seaweed flakes over the top and mix one last time before serving.