1 pound flank steak, thinly sliced against the grain
¼ cup soy sauce
1 cup beef broth
1 tablespoon sesame oil
1 tablespoon ginger, finely chopped
3 cloves garlic, finely chopped
1 tablespoon sugar
1 tablespoon cornstarch
1 tablespoon vegetable oil
1 teaspoon salt, divided
1 teaspoon black pepper, divided
1 medium onion, thinly sliced
1 red bell pepper, cut into bite-size pieces
1 green bell pepper, cut into bite-size pieces
1 hot chile (such as a serrano or Fresno), sliced
Directions
In a bowl, mix the baking soda and about ¼ cup of water with the sliced meat until combined.
Cover the bowl with plastic wrap and place it in the fridge for at least 30 minutes and up to 2 hours while the meat absorbs the brine.
Rinse the brine off under cold water and drain, then pat the meat dry.
Combine the soy sauce, beef broth, sesame oil, ginger, garlic, sugar, and cornstarch in a large bowl and mix until fully combined. Set it aside.
Preheat a nonstick skillet to medium-high heat.
Once hot, add the vegetable oil, beef, and ½ teaspoon each of salt and pepper.
Stir-fry for 3 to 5 minutes until golden brown, then transfer the cooked beef to a plate.
Next, add the onion, red pepper, green pepper, and chile, and season with the remaining salt and pepper. Stir-fry for 3 to 5 minutes until the onions have softened.
Add the beef back into the pan along with the sauce.
Cook for about 5 minutes until the sauce becomes thick and glossy.
Garnish with sesame seeds if desired and enjoy while hot.