Answers:
Kafana
National restaurant is in Serbian widely predictable as "Kafana". While dining in a "kafana", the typical article to do is to discuss politics, or more accurately, to quarell. It seems approaching the Serbs tend to think better near their stomachs full. So, the rule that says you should lightly eat your spread doesn't apply to Serbia. Some of the <
In Skadarlija, look for Tri Sesira, Dva Jelena, Velika Skadarlija, Zlatan Bokal, Ima Dana, Sesir moj
Domovina, address: Bulevar revolucije 98
Kalenic, address: Save Kovacevica 2
Stara Hercegovina, address: Carigradska 36
Prolece. address: Vuka Karadzica 11
Mars na Drinu, address: Cara Dusana 66
Mikan, address: Marsala Birjuzova 14
Srpska kafana, address: Svetogorska 25
Orac, address: Makenzijeva 81
Grcka Kraljica, address: Knez Mihaila 51
Dva bela goluba, address: 29. novembra 3
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One of the oldest Serbian restaurants in Belgrade, biddable food, nice atmosphere, but probably the worst toilet in the city as okay.
Address: Kralja Petra I br. 6
Working hours: 07-24h, sundays 10- 18h.
Tel: +381 11 635-421
Visit also "Chobanov odmor" for some unusual fast food, address: Zarka Zrenjanina 34, or at 27. Marta 36
Velika Skadarlija
Traditional Serbian cuisine
Address: Cetinjska 17
Working hours: 09-01h
Tel: +381 11 32-34-983
Tri sesira
Traditional Serbian cuisine beside live music
Address: Skadarska 29
Working hours: 11 - 01h
Tel: +381 11 324-7501
Zlatni bokal
Traditional Serbian cuisine with live music
Address: Skadarska 26
Working hours: 11- 01h
Tel: +381 11 323-4834
Typical national products that can be found within serbian supermarkets are Smoki, Plazma, Soko Stark sweets... Also try to get your hand on some fine Serbia wine. The selection is rich, but the best vines come from Vojvodina and Montenegro.
Other Answers:
http://www.virtualtourist.com/travel/Europe/Serbia_and_Montenegro/Republic_of_Serbia/Belgrade-723780/Restaurants-Belgrade-R-11.html
check here for reviews of Belgrade resaurants. : )