Mongolian Beef

The oil wasn't hot enough (aim for 350°F), you crowded the pan, or you added the sauce too early. Always maintain medium-high heat, fry in batches, and drain on paper towels before adding sauce in the final step.

You can pan-fry the beef in a thin layer of oil over high heat for 3–4 minutes, turning occasionally, until crispy; it will not be quite as crunchy but will still be tender inside. Stir-fry method yields a less crispy result and is more similar to beef and broccoli.

Slice and coat the beef with the flour mixture up to 4 hours ahead and refrigerate. Make the sauce 1 day ahead. Fry and assemble fresh just before serving for the best texture and flavor.

Flank steak is traditional and affordable. Sirloin, ribeye, or strip steak will also work; slice all thin against the grain and freeze for 1–2 hours before slicing if needed for cleaner cuts.

Steamed white or brown rice is essential to soak up the sauce. Fried rice or noodles are also excellent pairings.

Refrigerate beef and sauce separately for up to 2 days. Reheat the sauce gently in a skillet over medium heat, add the cold beef, and warm for 5–7 minutes; the beef will soften slightly as it reheats but retain some texture.