It’s the space next door to the popular Bar Reis on Fifth Avenue between 5th and 6th Streets in Park Slope. For a while it was the Reis 100, a tasty sandwich shop. Now it’s Kitchen Reis.I found this on NY Metromix:

“Brooklyn small plates” is the concept at this next-door spin-off of Park Slope’s Bar Reis. General manager Jeremy Mustakas, a Gottino alum, can explain it better: “We’re showcasing the food that have been in pork stores and provision shops and Italian-American bakeries here in Brooklyn over the last hundred years.” There you go! That philosophy translates into dishes like pork tonnato sandwich (braised pork shoulder with a tuna-mayo-caper sauce), duck hash (confit’d duck leg with fried turnip cake and quail egg), and baccala mantecato (salt-dried cod with potato and pepperoncini). (They’re BYOB for now.) At least they’ve got the cred to back everything up: Chef Joseph Aponte (Jimmy’s No. 43) grew up in Williamsburg, Mustakas was from Bay Ridge, and owner Reis Goldberg has been a Park Slope local for about 15 years now