
Main ingredients:
- 6 king oyster mushrooms
- 1/3 red bell pepper, 1/3 yellow bell pepper
- 1/2 red onion (or regular onion)
- 4 cups cooking oil
- 4 tablespoons cornstarch
Marinade for mushrooms:
- 1 tablespoon soy sauce
- 1 tablespoon sesame oil
- A pinch of salt
- A pinch of black pepper (optional)
- Sauce ingredients:
- 2 tablespoons soy sauce
- 3 tablespoons oligosaccharide (or corn syrup)
- 3 tablespoons vinegar
- 2 tablespoons sugar
- 1/2 cup water
Starch water:
- 1 tablespoon cornstarch
- 2 tablespoons water
Batter:
- 2 cups cornstarch
- 1 cup water
(serves 2 to 3)
Instructions:

Cut the mushrooms, bell peppers and onion into bite-sized pieces.

Marinate the mushrooms with soy sauce, sesame oil, salt and pepper.

Prepare the batter mixture and lightly coat the mushrooms with cornstarch. Dip them in the batter.

Deep-fry the mushrooms in oil heated to 160 degrees Celsius until crispy.

In a pan, bring the sauce ingredients to a boil, then add the vegetables and cook briefly. Thicken the sauce with starch water.
Serve the fried mushrooms with the sauce poured over them. Enjoy!
[Source: W table]
(Saesongi tangsu, tangsuyuk-style king oyster mushrooms, crispy king oyster mushrooms, Korean-style sweet and sour mushrooms)