I've used this recipe for carne asada. Get some skirt steaks, flap meat or flank steak and cut it thin.
1-1/2 pounds skirt,flap, flank steak
2 tablespoons and 2 teaspoons white vinegar
1/4 cup soy sauce
2 cloves garlic, minced
1 limes, juiced
1/4 cup olive oil
1/2 teaspoon salt
1/2 teaspoon...