Clean the mushrooms, shrimp, and cabbage, and cut them into bite-sized pieces.
Heat cooking oil in a pan and sauté garlic until fragrant.
Add the shrimp and stir-fry until they're halfway cooked.
Add the mushrooms and cabbage, and stir-fry over high heat.
Season with salt and pepper to taste.
Transfer the finished stir-fry directly to a plate.