Here is a sampling of food activities for single eaters:

Gourmet Group: Members attend planning parties to firm up details for subsequent dinner parties in which each guest has a cooking responsibility. Other activities include restaurant dinners, picnics and tastings. Membership $28. P.O. Box 2475, West Springfield, Va. 22152. 354-FOOD.

Entrees Inc.: At least one dinner every weekday night with 10 to 12 guests, matched by age group and evenly divided between men and women. Also brunches, cocktail parties, picnics, travel program. Membership $200 plus about $29 for each dinner. 800 18th St. NW, Suite 401, Washington, D.C. 20006. 822-8120.

Potluck dinners and cocktail parties:

* Potluck dinners once a week, cocktail parties once a month. Organized by Steve Mills. Call 549-0790.

Just Dessert: 20 men and 20 women gather in private homes for desserts and champagne on Sunday evenings. Events are age-ranged; women younger than 37 mix with men younger than 45, and women older than 37 are matched with men older than 45. $15 per event. Call 342-7773.

National Association of Single Persons: Events include international potluck dinners, picnics, restaurant dining. Membership $35. 1656 33rd St. NW, Washington, D.C. 20007. 333-3192.