At the Ethnic Market highlights international specialty foods and ingredients that you're very unlikely to find at your local Gristedes. Don't tell us you've never heard of kopcheny jazik! Even though Gothamist has spent more than our fair share of time at old-school Jewish delis we've only recently begun to enjoy this Russian cousin of deli tongue. In case you're wondering, the ruddy colored smoked veal tongue is pronounced "KOP-chornee YAH-zeeg." We always slice it......