Beef Vegetable Borsch

Ingredients

• 2 Tbsp. butter
• 1 medium onion, chopped
• 2 carrots, sliced
• 1/2 head cabbage, shredded
• 1 Tbsp. minced parsley
• 1 c. stewed tomatoes
• 2 cans beef broth
• 1 Tbsp. vinegar
• 1 can beets (undrained)
• 1 or 2 c. diced cooked beef
• salt and pepper
• 1 tsp. or more sugar
• sour cream