Katz’s Delicatessen, established 1888, is a theme park of Jewish-American food, with tribute gift shop, on the lower east side of Manhattan. There is nowhere more Jewish than Katz’s except Haredi Brooklyn, but if you go there you don’t come back. Katz’s offers a gentler Jewish experience, if you can conceive of such a thing, or it at least attempts it; it offers a kind of Judaism you can enjoy over lunch, which I find amazing because I have never managed it.