In shallow dish, marinate 8 oz beef in 1 tbsp Rosemary Infused Apple Cider Vinegar, turning once, for 25 minutes.
Discard marinade and slice beef into ¼ inch thick pieces.
In frying pan, add:
2 tbsp Rosemary Infused Apple Cider Vinegar
2 tsp brown sugar, packed
⅓ cup beef broth or bouillon
Bring to simmer, add beef slices and sauté until beef is tender, about 10 minutes, and liquid has thickened slightly, another 5 minutes.
Serve over rice or pasta.