Tim lures Tickle to Kentucky on a quest to unearth the origins of sour mash whiskey and why it changed American distilling forever. With help from Howard and Art, they build a period-correct pot still to recreate a recipe nearly two centuries-old.

In a rare lapse of judgment, Richard implodes Daniel's $3,000 copper still. As the fire marshal ramps up his investigation, Josh makes a tough decision to flee the country. Tim's solution to a centuries-old still build is going to sting a bit for Howard.