Step 1

Place the steak in a bowl with the corn starch and salt and pepper to taste. Toss to combine. Heat the vegetable oil in a large pan over high heat.

Step 2

Place the steak in a single layer in the pan. Cook for 2-3 minutes per side until golden brown. You may have to do this step in batches.

Step 3

Remove the steak from the pan. Place on a plate and cover to keep warm.

Step 4

Add the onion and red and green bell peppers to the pan. Stir in the chilies and sichuan peppercorns. Cook for 3-4 minutes or until vegetables are softened.

Step 5

Add the garlic and ginger to the pan; cook for an additional 30 seconds. Return the beef to the pan with the vegetables.

Step 6

While the steak and vegetables are cooking, make the sauce. Whisk together all of the sauce ingredients in a small bowl until smooth.

Step 7

Add the sauce to the beef mixture and bring to a boil; cook for 30 seconds to 1 minute, or until sauce is just thickened. Serve immediately.