S2, E4: 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 softdrink is made. Wandering off from the tour, Fry is horrified when he accidentally discoversthe top-secret ingredient that makes "Slurm" so impossible to resist.