1 lb. trimmed top sirloin
1/2 c. dry red wine
2 tbsp. olive oil
1 tbsp. red wine vinegar
1 tbsp. coarse grain mustard
1 clove minced garlic
1/2 tsp. cracked black pepper
1/2 tsp. sugar

Cut sirloin into 1 inch cubes. Combine remaining ingredients. Put beef cubes in a plastic bag and add marinade. Close bag, marinate 30 minutes. Pour off marinade; reserve. Thread 4-5 beef cubes onto each of 4 skewers. Broil or grill 10-13 minutes; turn and brush with reserved marinade occasionally. 4 servings.