From the outside, the Lost Spirits Distillery is just another boxy, early-20th-century building along the frayed edge of downtown Los Angeles. At first the inside appears similarly uninspired: deep and unfinished, littered with cardboard boxes, plumbing fittings, spools of wire, inscrutable items made of copper, a forklift. The usual crap. But what’s this then? A heavy black curtain bisects the industrial space from floor to ceiling, nearly from the front door to the back.