Ingredients
| 454 g | sirloin steak |
| salt | |
| 5 g | pepper |
| 9 g | cornstarch |
| 5 g | light brown sugar |
| 1 | lemon |
| 5 stalks | celery |
| 3 cloves | garlic |
| 3 | scallions |
| 28 g | vegetable oil |
| 35 g | soy sauce |
| 27 g | unsalted butter |
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Directions
Prep Beef
- 1. Place 454g sirloin steak in the freezer for 10 minutes until firm.
- 2. Slice chilled beef against the grain into ¼-inch-thick strips about 2 inches long.
- 3. Place beef in a medium bowl and season with salt and 5g pepper.
- 4. Add 9g cornstarch and 5g light brown sugar and toss until beef is thoroughly coated.
Prep Aromatics
- 5. Using a vegetable peeler, remove the peel from 1 lemon in wide strips; set peels aside.
- 6. Cut lemon in half and set aside.
- 7. Trim and thinly slice 5stalks celery on a bias.
- 8. Finely grate 3cloves garlic.
- 9. Thinly slice 3 scallions, keeping green and white parts separated.
Cook
- 10. Set a large cast-iron or stainless-steel skillet over medium-high heat until very hot.
- 11. Add 14g vegetable oil to the pan.
- 12. Add half the beef in a single layer and cook without stirring until deeply browned around the edges, about 2 minutes.
- 13. Flip beef — pieces at the edges first — and cook on the other side until no longer pink, about 20 seconds.
- 14. Transfer beef to a plate and repeat with remaining beef using the remaining 14g vegetable oil.
- 15. After the second batch is transferred, add celery, garlic, scallion whites, and reserved lemon peels to the pan.
- 16. Season lightly with salt and cook, stirring often, until scallions have slightly softened, about 1 minute.
- 17. Return beef and any juices to the pan.
- 18. Add 35g soy sauce and 27g unsalted butter.
- 19. Cook, tossing, until you have a smooth sauce that coats the steak, about 30 seconds.
- 20. Turn off the heat and squeeze in the juice from one lemon half; toss once more.
- 21. Transfer stir-fry to a platter, top with scallion greens, and serve with the remaining lemon half.