Beerfest (2006)

When German-American siblings Todd and Jan venture to Germany to fulfill their grandfather's final wish of spreading his ashes, they stumble upon Beerfest, a clandestine gathering where participants compete in consuming copious amounts of stout. Intrigued by the event, the brothers decide to partake in the competition to uphold their family's reputation as skilled beer enthusiasts. Despite the skepticism from their relatives in the homeland, who doubt the Americans' ability to succeed, Todd and Jan resolve to return to the US and train rigorously for a face-off at the next year's event.