Dial-A-Joke, Dial-a-Prayer and Dial-a-Poem are all ways to let your fingers do the talking. Now we have Dial-a-Diet. The Dairy Council of Washington, D.C., has started a new consumer service line called "Dial NEW-trition." The line will operate 24 hours a day and deliver information on food, nutrition and health. Call 986-9116.

When someone mentions the word Smorgasbord, you immediately thank Danish, right? Not so. The 19th Annual Jewish Smorgasbord, sponsored by the Sisterhood of the Beth El Hebrew Congregation, will be held Wednesday, March 16 from 11:30 a.m. to 2 p.m. and will feature a variety of Jewish gourment foods. The temple is located at 3830 Seminary Rd., in Alexandria. Call 451-5786 for more information.

Aunt Sammy's Radio Recipes are back. A newly revised edition of the 50-year old best-selling cookbook, sponsored by the U.S. Department of Agriculture, is available for 45 cents through the Superintendent of Documents, Government Printing Office, Washington, D.C. 20402. Ask for Home and Garden Bulletin No. 215 and if you're too young to remember who the wife of Uncle Sam was, now's the time to find out.