Step 1

Place garlic, sesame oil and 1 tablespoon sherry in a shallow glass or ceramic dish. Add steak. Stir to coat. Cover with plastic wrap. Place in the fridge for 30 minutes to marinate.

Step 2

Stir cornflour and water in a small bowl until cornflour dissolves. Stir in soy sauce and remaining sherry.

Step 3

Spray a large wok with oil. Heat over high heat. Stir-fry one-third of the steak for 2 minutes or until browned. Transfer to a large plate. Repeat, in 2 more batches, with the remaining steak, reheating the wok between batches.

Step 4

Spray the wok with oil and heat over high heat. Stir-fry onion for 2 minutes. Add the capsicum and stir-fry for 1 minute. Add pak choy and stir-fry for 1 minute or until just wilted. Add the beef and soy sauce mixture. Stir-fry for 1-2 minutes or until heated through.

Step 5

Divide rice among dishes. Top with the beef mixture and sesame seeds.