Bò Lúc Lắc Recipe (Vietnamese Shaking Beef)

Cut bell peppers lengthwise into slightly thick pieces.
Remove the outer skin of the onion, then dice it into bite-sized cubes. Cut the scallion into 1.5-centimeter lengths.
Cut the beef into bite-sized cubes with a sharp knife.
Toss the beef cubes in a mixture of salt, brown sugar, black sesame seeds, olive oil, chili powder, oyster sauce, soy sauce, and red wine. Marinate the beef for at least 1 hour.
In a heated stir-fry pan with olive oil, sear the marinated beef cubes for 1 - 2 minutes until medium rare. Set aside.
Saute garlic in olive oil until fragrant.
Add bell pepper pieces and onion cubes along with the oyster sauce, soy sauce, and seasoning. Stir fry for 3 minutes.
Mix the vegetables with beef cubes, scallion, and unsalted butter.
Cook until the butter melts and thickens the sauce.
Top with black pepper and cilantro.
Serve with salads and white rice.