Balsamic vinegar and lemon juice help tenderize this less-tender cut of beef and add flavor. After cooking, slice the steak immediately across the grain into thin strips.
Trim fat from steak. Rub steak with pepper, garlic, and salt.
Heat oil in a large skillet over medium-high heat. Add steak; cook 6 minutes on each side or until steak is desired degree of doneness, basting with vinegar.
Cut steak across grain into thin slices. Drizzle lemon juice over steak.
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