Vegetarian Sisig

Ingredients

• ¾ cup soy sauce
• ½ cup vinegar
• ¼ cup oyster sauce
• 1 ½ tbsp sugar
• 1 tsp salt
• ½ tsp ground black pepper
• ⅓ cup button mushrooms
• ⅓ cup shiitake mushrooms
• ⅓ cup wood ear mushrooms
• ½ cup firm tofu
• 2 tbsp vegetable oil
• ¼ cup white onion
• ½ thumb-sized ginger
• 2 siling labuyo
• ¼ cup broccoli
• ¼ cup cauliflower
• ¼ cup carrot
• ¼ cup baby corn
• ¼ cup green bell pepper
• ¼ cup red bell pepper
• 1 cup squash
• ½ cup coconut milk
• cornstarch dissolved in water, as needed
• fish sauce
• salt
• ground black pepper