Ingredients:
For the Marinade:
1 lb (450g) flank steak or sirloin (thinly sliced against the grain)
2 tablespoons soy sauce (or tamari for a gluten-free option)
1 tablespoon oyster sauce
1 tablespoon hoisin sauce
1 tablespoon rice vinegar
1 tablespoon cornstarch (for velveting the beef)
1 teaspoon sesame oil
1 teaspoon garlic powder
1 teaspoon freshly ground black pepper (or more for extra spice)
For the Stir-Fry:
2 tablespoons vegetable oil (or peanut oil for a slightly nuttier flavor)
1 medium onion, thinly sliced
1 red bell pepper, julienned
1 yellow bell pepper, julienned
1 green bell pepper, julienned
2 cloves garlic, minced
1-inch piece of fresh ginger, grated or minced
1/4 cup soy sauce (or tamari for a gluten-free option)
1 tablespoon rice vinegar
2 tablespoons brown sugar
1/4 cup water (or beef broth for extra richness)
1/2 teaspoon crushed red pepper flakes (optional, for extra heat)
Salt, to taste
Fresh cilantro or green onions for garnish (optional)
For the Sizzling Effect (Optional but Recommended):
Sizzling hot plates or a cast-iron skillet
2 tablespoons sesame oil (for extra sizzling aroma)