A year or so ago, I profiled Liebman's Deli in this space. At that time, the Riverdale section of The Bronx hosted a relative bonanza of pastrami and pickles. There were three, count 'em, three kosher delis. Since then, one of them, Skyview, has succumbed. That leave only a duece: Liebman's and this 51-year-old specimen.