Why use baking soda in the beef marinade?
Baking soda raises the pH of the meat, breaking down proteins and making even lean cuts like New York strip incredibly tender. Use 1½ tsp and marinate for at least 15-30 minutes before rinsing.
What's the difference between Shaoxing wine and other substitutes?
Shaoxing wine adds depth and fermented flavor specific to Chinese stir-fries. Dry sherry or sake work, but lack the same richness; avoid cooking wine with added salt.
How do I keep broccoli crisp-tender and not mushy?
Cut florets to uniform size, add them after the beef is seared, and stir-fry for 3-4 minutes max. High heat and quick cooking preserve texture.
Can I make this ahead?
Marinate the beef up to 4 hours ahead. Cook fresh to order for best broccoli crispness; reheated stir-fry softens vegetables but tastes fine cold the next day.
What size should I slice the beef?
Slice against the grain into ¼-inch strips. Thinner slices cook faster and feel more tender; cutting against the grain shortens muscle fibers for a more tender bite.