Koval Distillery, Established In 2008, Is Located In The North End Of Chicago. They Are A 100% Grain-to-bottle Operation That Sources Their Grains From An Organic Co-op In The Midwest. Their Bourbon Mash-bill Consists Of Two Grains: Corn And Millet. This Is Aged Less Than Four Years In 30-gallon, New Charred Barrels. All Koval's Whiskeys Are Bottled As Single-barrel So Slight Variations Will Occur.