Stir-fried Beef with Oyster Sauce and Vegetables

Slice the beef thinly against the grain. In a bowl, combine the beef with 1 tablespoon of oyster sauce, 1 teaspoon of soy sauce, 1/2 teaspoon of sugar, and 1 tablespoon of cornstarch. Mix well and let it marinate for at least 10 minutes.

Mince the garlic and slice the yellow onion into wedges. Cut the red bell pepper into strips and separate the broccoli into small florets.

In a small bowl, whisk together the remaining 2 tablespoons of oyster sauce, 1 tablespoon of soy sauce, 1/2 teaspoon of sugar, and 60 ml of water or beef broth. Set aside.

Heat 1 tablespoon of vegetable oil in a wok or large skillet over high heat until shimmering. Add the marinated beef in a single layer and stir-fry for 1-2 minutes until browned but not fully cooked. Remove the beef from the wok and set aside.

Add the remaining 1 tablespoon of vegetable oil to the wok. Add the minced garlic and onion, stir-fry for 30 seconds until fragrant. Add the broccoli florets and red bell pepper, stir-fry for 2-3 minutes until slightly tender-crisp.

Return the beef to the wok. Pour in the prepared sauce mixture. Stir-fry for another 1-2 minutes, tossing everything together until the sauce thickens and coats the beef and vegetables.

Serve immediately with steamed jasmine rice. Enjoy your authentic Thai stir-fry!