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.

Tim takes Josh to California's American River in search of the liquor James Marshall distilled before his discovery of gold changed the country forever; the shiners re-create a spirit that fueled the 1849 gold rush.

Tim and Tickle search for a legendary ingredient that fueled Charleston's moonshine resurgence after the Civil War but when they taste Jimmy Red Corn for the first time, they realize they can make a run of moonshine with a flavor like no other.