You know the saying by now: Katz’s never kloses. That means you can get a deli sandwich roughly the same height as the two-story brick building that houses Katz’s on Lower Westheimer, or a cheesecake milkshake (which, yes, contains an entire slice of cheesecake), 24 hours a day. Nothing tastes quite as good after a night on the town as a platter of Katz’s fried pickles.