Great Beginnings for Basic Soups

Basic Soup Mixture
1/2 cup (1 stick) butter or more
3/4 cup all-purpose flour
1 quart homemade rich chicken stock or you may use canned
2 ribs celery, stringed and chopped fine
1 small-medium onion, finely chopped
1 cup heavy cream

In heavy large kettle, melt butter. With wooden spoon stir in onions and celery. Saut