What cut of beef works best for pepper steak?
Bottom round steak is ideal because it's lean and affordable. Slice it thinly (¼ inch) against the grain to ensure tenderness during the quick stir-fry.
Can I prepare the ingredients ahead of time?
Yes. Slice the beef and chop all vegetables up to 4 hours ahead. Store separately in airtight containers in the refrigerator, then stir-fry when ready to eat.
How do I keep the beef tender in a stir-fry?
Slice the meat thin and against the grain, use high heat, and avoid overcooking—cook just until browned, 2–3 minutes per batch. Remove it from the pan before cooking vegetables to prevent toughening.
Can I use a different soy sauce or swap the vinegar?
Low-sodium soy sauce works well as a 1:1 swap. Rice vinegar is traditional; white vinegar or apple cider vinegar can substitute but will shift the flavor slightly.
How should I store leftovers?
Store the steak-pepper mixture and rice separately in airtight containers for up to 3 days. Reheat gently in a skillet or microwave; the cornstarch-thickened sauce will thicken further when cold.