Cut 1 pound of beef sirloin into thin strips against the grain to tenderize the meat.,

In a bowl, combine 2 tablespoons soy sauce, 1 tablespoon oyster sauce, 1 teaspoon cornstarch, and 1/4 cup beef broth to make the stir-fry sauce. Set aside.,

Wash and cut 3 cups of fresh broccoli florets into bite-sized pieces.,

Heat 2 tablespoons vegetable oil in a large skillet or wok over medium-high heat until shimmering.,

Add the beef strips to the skillet and stir-fry for about 3-4 minutes until the beef is browned but not fully cooked. Remove beef from skillet and set aside.,

In the same skillet, add 1 clove minced garlic and 1 teaspoon minced ginger. Stir-fry for 30 seconds until fragrant.,

Add the broccoli florets to the skillet along with a splash of water to create steam. Cover and cook for 3-4 minutes until broccoli is tender but still crisp.,

Return the beef strips to the skillet and pour in the prepared stir-fry sauce. Stir everything together and cook for another 2 minutes until the beef is cooked through and sauce thickens slightly.,

Remove from heat and serve immediately, ideally over steamed rice for a complete meal.