"The wine-driven American restaurant that became a fixture on 'best of' lists from D.C. critics over the past decade, poured its last glass in February. Owner Jason Kuller could not re-negotiate a lease to keep the Penn Quarter stalwart in its current location. Proof was the first restaurant founded by Kuller’s brother, Mark Kuller, a former tax attorney who opened a string of hits on the D.C. dining scene before he died in 2014. After Mark Kuller opened Proof in 2007, the family’s restaurant group grew to include Estadio, Doi Moi, and the former 2 Birds 1 Stone cocktail bar on 14th Street NW. Max Kuller, Mark Kuller’s son, split from the group last September, taking Estadio with him." - Tierney Plumb
