Best Pepper Steak Recipe - How To Make Pepper Steak

Ingredients

• 1/2 c. reduced-sodium soy sauce
• 1/4 c. rice wine vinegar
• 3 tbsp. packed light brown sugar
• 2 tbsp. cornstarch
• 2 tbsp. vegetable oil, divided
• Kosher salt
• Freshly ground black pepper
• 1 lb. flank steak, thinly sliced against the grain
• 1 green bell pepper, seeds and ribs removed, thinly sliced
• 1 red bell pepper, seeds and ribs removed, thinly sliced
• 3 cloves garlic, finely chopped
• 1 tbsp. finely chopped peeled ginger
• Cooked white rice, for serving