There is a new Mexican bar & restaurant on 4th avenue on the corner of 12th street in Park Slope. It just opened last Thursday. I've eaten there twice already and been impressed. Good service and atmosphere. The tacos cantinas is very good as well as the chicken burrito. Also rice and beans with any entree. Have not tried the food from the grill menu. I think the prices may be a little steep for the neighborhood but then again you get plenty of bang for your buck so i'd feel dumb making it an issue.