Bib & Tucker Small Batch Bourbon Whiskey is crafted from a mash of 70% corn, 26% rye and 4% malted barley. The grains, which were harvested in late 2006 and early 2007, were distilled twice. First through a column still and then through an old-fashioned copper pot still. Following distillation, the bourbon was matured in No. 1 charred American white oak barrels for a minimum of six years (the average age of the bourbon is actually 7.5 years, however).