A delicious and quick-to-make spicy beef stir-fry with vibrant vegetables and bold flavors.
Combine the soy sauce, sesame oil, brown sugar, minced garlic, and diced red onion in a mixing bowl.
Mix the sauce ingredients thoroughly to ensure the sugar dissolves completely.
Add the black pepper, red pepper flakes, sesame seeds, sliced leeks, and julienned carrot to the sauce.
Adjust the spice level by adding more or less red pepper flakes.
Mix in the sliced beef, ensuring it is evenly coated with the sauce.
Let the beef marinate for at least 30 minutes for better flavor absorption.
Heat a wok over medium-high heat and lightly coat the bottom with oil.
Ensure the wok is hot before adding the ingredients to achieve a good sear.
Add the beef and marinade to the wok and stir-fry until the beef is cooked through.
Stir constantly to prevent sticking and ensure even cooking.
Remove from heat and serve hot with your choice of rice or noodles.
Garnish with additional sesame seeds or chopped green onions for extra flavor and presentation.