With Fatty Johnson's, Zak Pelaccio (chef of Fatties Crab and 'Cue) has doubled down on the idea of the pop-up. It's not just a temporary bar that may soon disappear, it's a bar that disappears every time it closes. Go two times and you'll get two different cocktail menus designed by different guest bartenders. Go a third, and you'll find no cocktail menu at all. Given the ticking clock, though, whatever you do: Go very soon.