Located at the Hotel Tropical, Karu offers a buffet of local cuisine nightly for 32 real per person (not including drinks).
Included in the buffet are an array of salads, meats, fruits, vegetables and desserts. They tend to vary in quality, but the good stuff is really, really good. The BBQed meats, in particular, were outstanding.
The more adventurous an eater you are, the more you're likely to enjoy it. Quail eggs, wild boar and alligator stew were some of the LESS unusual items available.
The atmosphere is nothing special, although they do have live music on some nights. Sometimes it's a single person who sings and plays the guitar, but on other nights, they have a what they call an Indian Folk Show. There's nothing traditional about it, it's an over-the-top stage show that is part Vegas and part Miami Sound Machine, but amusing nonetheless.
You could eat here every night you stay at the Tropical and not get bored.