If you're not sure you've given moussaka and spanakopita a serious taste test, maybe it's time to educate your palate in Greek or Middle Eastern specialties. Listed below is a sampling in the District.

AE (American Express), DC (Diners Club), CB (Carte Blanche), MC (MasterCard), V (Visa), C (Choice). "Free parking" indicates a parking lot; otherwise, expect street parking or commercial lots. "Full bar" indicates spirits, beer and wine. "Children" indicates children's portions available.

Astor Restaurant, 1813 M St. NW. Tel.: 331-7994. Hours: Mon.-Thurs. and Sun. 11 a.m. to 2 a.m., Fri.-Sat. 11 a.m. to 3 a.m. Cards: AE, DC, CB, MC, V. Street and commercial parking. Full bar. Entree price range: $3.95 to $12.95. Specialties: moussaka, lamb shish kebab, Greek salads.

Bacchus Restaurant, 1827 Jefferson Place NW. Tel.: 785-0734. Hours: Mon.-Thurs. noon to 2 p.m. and 6 p.m. to 10 p.m., Fri. noon to 2 p.m. and 6 p.m. to 10:30 p.m., Sat. 6 p.m. to 10:30 p.m. Closed Sun. Cards: AE, MC, V. Street parking. Full bar. Entree price range: $5 to $9.95. Specialties: Lebanese cuisine, such as ouzi (spiced rice topped with lamb chunks), fatte-bellahm (deep-fried pizza bread with yogurt and chunks of lamb smothered in butter and pine kernels).

Calvert Cafe, 1967 Calvert St. NW. Tel.: 232-5431. Hours: Mon.-Sun. noon to 11 p.m. Cards: None, cash, personal or travelers' checks only. Street and commercial parking. Full bar. Children. Entree price range: $5.25 to $6.95, $8.50 for combination platter of six items. Specialties: stuffed grape leaves, couscous (wheat grains steamed over a spicy stew of lamb, served with vegetables and hot pepper sauce), lamb shish kebab.

Caspian Tea Room, 4801 Massachusetts Ave. NW (in the Spring Valley Center). Tel.: 244-6363. Hours: Mon.-Thurs. 9 a.m. to 9:30 p.m., Fri.-Sat. 9 a.m. to 10 p.m. Closed Sun. Cards: AE, DC, MC, V, C. Street and commercial parking. Full bar. Children. Entree price range: $4.50 to $12.95. Specialties: fassen jan (walnuts with pomegranate over rice), lamb and chicken kebabs, aush (sweet and sour soup with vegetables and meatballs).

Greek Port Restaurant, 1736 Wisconsin Ave. NW. Tel.: 333-0111. Hours: Mon.-Sun. 11:30 a.m. to midnight. Cards: None, cash or personal check only. Street and commercial parking. Full bar. Entree price range: $4.75 to $9. Specialties: moussaka, stuffed grape leaves, pastetecio (ground beef, pasta and bechamel sauce), baklava.

Ikaros of Georgetown, 3130 M St. NW. Tel.: 333-5551. Hours: Sun.-Thurs. 7 a.m. to 1 a.m., Fri.-Sat. 7 a.m. to 4 a.m. Cards: None, cash and travelers' checks only. Street and commercial parking. Wine and beer only. Entree price range: $2.75 to $4.75. Specialties: gyros, lasagna casserole, moussaka.

Iron Gate Inn, 1734 N St. NW . Tel.: 737-1370. Hours: Mon.-Sun. 11:30 a.m. to 10 p.m. Cards: AE, DC, CB, MC,V. Street and commercial parking. Full bar. Children. Entree price range: $3 to $11. Specialties: fusilli pasta (vegetarian), lamb shanks in burgundy wine, lamb, shrimp or vegetarian curry with rice.

Mykonos, 1825 I St. NW (in the Metro Market at Farragut North Metro station). Tel.: 223-1169. Hours: Mon.-Fri. 10 a.m. to 6 p.m. (lunch and dinner only). Closed Sat. and Sun. Cards: None, cash and travelers' checks only. Street and commercial parking. No bar. Entree price range: $2.95 to $4.95. Specialties: souvlaki (marinated beef on a stick), gyros, moussaka, spanakopita (spinach pie, seasoned with feta cheese, egg and onions).

Round Table Restaurant, 4859 Wisconsin Ave. NW. Tel.: 362-1250. Hours: Mon.-Thurs. 11:30 a.m. to 10:30 p.m., Fri. 11:30 a.m. to 11 p.m., Sat. noon to 11 p.m., Sun. noon to 10 p.m. Cards: AE, DC, CB, MC, V, C. Street parking. Full bar. Children. Entree price range: $3 to $11.75. Specialties: Greek-style roast leg of lamb, styfado (spiced beef with onions), pastitsio (macaroni with meat, egg and tomato, topped with a cream sauce), moussaka.

Taverna The Greek Islands, 307 Pennsylvania Ave. SE. Tel.: 547-8360. Hours: Mon.-Sat. 11 a.m. to 11:30 p.m., Sun. 4 p.m. to 11 p.m.. Happy Hour Tues. Fri. 3 p.m. to 7 p.m. (includes complimentary Greek hor d'oerves) Cards: AE, DC, MC, V. Street parking. Full bar. Entree price range: $3.95 to $12.95. Specialties: spanakopita, exochiko (lamb pie), moussaka, stuffed grape leaves.