Yummy Paleo Beef Soup

Yummy Paleo Beef Soup 1 lb stewing beef 2 tbsp cooking fat (I use coconut oil) 4 cups beef stock 1 cup onion, chopped 1 cup celery, chopped 2 cups of green/red/yellow bell peppers (optional) 4 carrots, peeled and chopped 2 large sweet potatoes, peeled and cubed (optional) 1 28oz can diced tomatoes 1.  In saucepan, combine cooking fat, onion, celery, peppers, carrots, sweet potatoes 5 minutes on medium heat.  Stir constantly. 2.  Add beef, tomatoes, stock.  3.  Cover & cook for 45 minutes.  T...