That's no metaphor — there's a brown-gold liquid in a clear glass bottle sitting on a work table in Rucker's studio at Baltimore's Creative Alliance, where he's an artist in residence. He's spent the past four years refining the concoction, which he calls "Harmony Food Sauce." It's based on a salad dressing he once ate and couldn't stop thinking about. One version has notes of cayenne and another, of wasabi. Rucker says it tastes good on everything — bacon, seafood, eggs, you name it.