An unmarked, stainless steel door in the ice cream shop Frozen Matter doesn't lead to a walk-in freezer like you'd expect, but to Retrograde, an intimate speakeasy that serves eccentric artisan cocktails. The bar has a sci-fi meets 60's throwback feel, complete with cool purple lighting and drinks like the Concentrated Dark Matter with rye, rock candy, and orange bitters. in a glam, purple-lit space. The bar has a '60s throwback theme