Flank Steak

This versatile, all-purpose cut is delicious in carne asada, fajita, and steak salad recipes.  But because it's so lean, it can be dry and tough if overcooked or sliced too thickly—it's important to cook flank to no more than medium and slice it very thinly against the grain.

Prepared Flank Steak image thanks to Beef It's What's for Dinner.