TACO SOUP

1 pound hamburger
2 cups chopped carrots
2 cups chopped celery
2 cans cream of potato soup
1 can kidney beans
1 quart of stewed tomatoes
1 can tomato sauce
1 cup beef stock
1/2 pkg taco seasoning

Brown hamburger and saute carrots and celery. Add remaining ingredients and simmer. Serve hot with sour cream, shredded cheese and tortilla chips.