S02E04: Fry & the Slurm Factory

Fry opens a "Slurm" beverage container bearing the golden bottle cap and wins a tour of the "Slurm" Factory (a la "Willy Wonka") to see how the world's most deliciously addictive soft drink is made. Wandering off from the tour, Fry is horrified when he accidentally discovers the top-secret ingredient that makes "Slurm" so impossible to resist.