Adaptions:Cream of celery: Slice a stalk of celery into thin pieces and sauté in the butter before adding flour. Once soft, add flour and proceed as described above.Cream of mushroom: Chop 3-5 mushrooms into small pieces. Sauté mushrooms in butter before adding flour. Once soft, add flour and proceed as described above.Gluten-Free: Use arrowroot flour or white rice flour in place of the wheat flour.