Pumpkin Soup with flour

1 tablespoon extra virgin olive oil 2 tablespoons butter 1 fresh bay leaf 2 stalks celery & leaves , finely chopped 1 medium yellow onion , finely chopped[...]

2 medium onions 2 tablespoons butter 1 tablespoon flour 2 cups chicken broth 1 cup half-and-half 3 cups pumpkin puree salt to taste pepper 1/2 cup cream,[...]