We went here last night for my birthday and it was great. I'm surprised to not see more interest in this place given the quality of ingredients used and some unique menu items. While I'm not expert in Peruvian food, everything we had was clearly very fresh and well balanced. We had:
Beef hearts (terrific)
Mixed ceviche
Various empanadas
Marinated mussels
Paella
Aji de Gallina (unusual flavors, but I couldn't stop eating it)
Lamb stew
Lomo Saltado
Flan
Rice pudding
and of course, the traditional Peruvian dish, fettuccine with mushrooms. Ha.
Great price point, and byo pisco (or other booze). They mix pitchers of sours for $10 that are very very good. I didn't think the egg white froth would work in a pitcher context, but it did. Great evening, but we were the only party in there, so I encourage everyone to check it out.
4 Suyos
http://www.4suyos.com2727 W. Fullerton
Chicago, IL 60647
773-278-6525