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. With Howard building a period pot still, the shiners recreate 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.

Tim and Howard head deep into the Texas borderlands in search of Pancho Villa’s lost recipe for Sotol, the rural Mexican moonshine that fueled revolts and revolution. To recreate the cleanest, high-proof spirit, Tickle designs a UFO-shaped copper pot.

Tim takes Josh to Abe Lincoln's boyhood home in Kentucky to uncover evidence the 16th President may not have been entirely honest about his liquor-selling past. Using local sorghum, they recreate a whiskey that Lincoln would have tasted as a young man.