Bento sides

Bento Black Pepper Beef

Quick black-pepper beef for lunch boxes, designed to stay flavorful after reheating the next day.

Total 18 min Skillet Medium 1 servings
Skillet Bento-friendly dishesHigh-protein meals
Bento Black Pepper Beef

Slice the beef thinly and stir-fry it quickly so it remains tender after the lunch box is reheated.

Steps

How to make it

Prep 10 min · Cook 8 min

  1. Slice beef (180 g) thinly against the grain; toss with soy sauce (1 tbsp), rice wine (1 tbsp), cornstarch (1 tsp), and black pepper (1/2 tsp) for 10 minutes. Cut onion (1/4) into strips; reserve remaining black pepper (1/2 tsp) for stir-frying.
  2. Heat a skillet over medium-high; add olive oil (1 tbsp). When hot, stir-fry beef about 2 minutes until colored; immediately remove.
  3. In the same pan, stir-fry onion strips about 1 minute until translucent and slightly soft.
  4. Return beef, sprinkle remaining black pepper, and stir-fry over high heat 30 seconds until evenly coated and beef is cooked through.
  5. Taste and adjust; cool completely before packing in bento boxes (microwave about 1 minute to reheat—cover with a damp paper towel to prevent drying).

Tips & storage

Make it easier

  • Add bell pepper strips for color and crunch.
  • Rest meat for 2–3 minutes before slicing; when pieces vary in thickness, check the thickest center for doneness.

Refrigerate up to 2 days; microwave about 1 minute to reheat.

FAQ

Can I use pork instead?

Yes. Use thin pork loin slices and cook them completely before cooling and packing the lunch box.

How do I keep the main ingredient from drying out?

Adjust the heat for thickness, rest before slicing, and reheat chilled portions gently after cooling them completely.