Royal Clayton's — an English pub located in the Toy Factory lofts in the midst of downtown L.A.'s Arts District — is a gathering place for casual drinks, a game of pool and tasty gastropub fare. Still, if you hanker for something beyond a basic martini, you need only ask your bartender if he has a few tricks up his sleeve. Royal Clayton's bartender Plex Lowery has been experimenting with an off-menu take on a classic old-fashioned that he calls "the Prude." It gets its kick from a dollop of pomegranate molasses instead of sugar or simple syrup. The result is a pleasantly potent mash-up of bourbon and bittersweet fruit that lingers on the palette and warms a winter belly.