Beef and Bell Pepper Stir-fry with Oyster Sauce

Steps

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1. 1
   Place the beef in a bowl and rub in mirin until evenly coated. Add sake, soy sauce, sesame oil, and potato starch, then mix well and massage the beef thoroughly. Cover with plastic wrap and marinate for about 10 minutes.
   ▶ ≈2:28
2. 2
   Remove the stem from the bell pepper by pushing the bud end, cut it in half lengthwise, and remove the seeds and white membrane. Tear the pepper into bite-sized pieces.
   ▶ ≈3:11
3. 3
   Make a cross-shaped cut at the base of the king oyster mushroom and tear it into 4–8 strips by hand, adjusting the size to your preference.
   ▶ ≈3:52
4. 4
   In a bowl, combine oyster sauce, soy sauce, sugar, sake, chicken stock powder, and grated garlic. Mix well until the sugar dissolves completely.
   ▶ ≈4:35
5. 5
   Add sesame oil to a frying pan and heat over medium heat for about 30 seconds. Add the bell peppers and king oyster mushrooms and stir-fry for about 2½ minutes until about 80% cooked.
   ▶ ≈5:04
6. 6
   Push the vegetables to the side and add a little more sesame oil. Add the marinated beef and stir-fry, breaking it up as you go. When the beef is about 80% cooked, pour in the prepared sauce and continue stir-frying until the beef is fully cooked and well coated with the sauce.
   ▶ ≈5:57