Use 1 mushroom, 1/4 onion, 1/3 spoon of minced garlic, half a spoon of soy sauce, slightly less than 1 spoon of oligosaccharide, and 2 spoons of water. Simmer them together.
Wash the king oyster mushroom thoroughly and cut it into bite-size pieces.
Heat the pan with olive oil and preheat.
Place the mushrooms on the pan and grill over medium heat.
Season with salt and pepper.
Once golden and cooked, transfer to a plate to serve.