By Padmananda Rama
Originally published on Thu March 28, 2013 8:55 am
On a recent morning, just south of Washington, D.C.'s Dupont Circle, about a dozen people are lined up outside a restaurant waiting for its lunchtime opening.
Jon and Ralph Rosenbaum are at the front of the line and are the first to be greeted by DGS Delicatessen general manager Brian Zipin, who leads them down a white tile hallway and seats them at a small table against a brick-exposed wall.
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