- 1/2 pound sirloin, sliced diagonally into thin strips
- 1 cup bite-size pieces red or green bell pepper
- 1 cup bite-size pieces onion
- 2 tablespoons reduced-sodium soy sauce
- 1 teaspoon sugar
- 1 1/2 teaspoons olive oil
- 1 clove garlic, crushed
- 1 teaspoon red-pepper flakes
- Dump all the ingredients into a large ziplock plastic bag; shake well. You want the soy sauce and oil to permeate everything in the bag.
- Pour the meat, sauce, and vegetables into a medium-hot cast-iron skillet, stirring frequently until the meat is seared and the vegetables begin to lose their water (about 2 to 3 minutes).
- For a more authentic Korean-style flavor, use toasted sesame oil instead of olive oil and add 1 Tbsp rice-wine vinegar.