This time it won't be about food, but only about entertainment. Čistá duše is music club in Prague centre (on Charles square). I think it can be called as meeting point of African culture (well at least it looked as such to me :-)).
Every evening (probably) you can listen there to rhythms of African drums and enjoy dancing on them.
Drinks are for reasonable price for this part of town, but you won't get there anything to eat, so you should choose something else to fill your hungry stomach.