Clean the mushrooms with a dry cloth to preserve their aroma.

Heat 3 tbsp olive oil and sauté 2 tbsp minced garlic over medium heat until fragrant.

Add 10 handfuls of mushrooms and stir-fry until coated with oil.

Pour 400ml water into the pan and bring to a boil over high heat, then reduce to medium heat.

Add 2 tbsp soy sauce, 1/3 tbsp sugar, a pinch of pepper, and 1 tbsp oyster sauce.

Cut 6 stalks of green onion into 5cm pieces and add them to the pan.

Mix 2 tbsp cornstarch with 2 tbsp water and pour into the pan to thicken the sauce.

Turn off the heat and add 1 tbsp sesame oil. Adjust the seasoning with salt.