Back in October, Mississippi River Distilling Company (LeClaire, Iowa) offered up an aged, single barrel incarnation of its Cody Road Bourbon to celebrate the distillery’s fifth anniversary. This is the stuff they kept in their under-sized barrels twice as long as usual—and exactly what I wished for after tasting their standard, 90 proof bourbon, which I found unique and enticing for its fresh, wheaty flavor, but noticeably under-aged.