Steps
How to make it
Prep 10 min · Cook 8 min
- 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.
- Heat a skillet over medium-high; add olive oil (1 tbsp). When hot, stir-fry beef about 2 minutes until colored; immediately remove.
- In the same pan, stir-fry onion strips about 1 minute until translucent and slightly soft.
- Return beef, sprinkle remaining black pepper, and stir-fry over high heat 30 seconds until evenly coated and beef is cooked through.
- 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).