Let's Stalk Spinach(1951)

Popeye's nephews don't want to eat their spinach, so Popeye tells them about his youth, before he liked spinach. In a Jack and the beanstalk scenario, he climbs a spinach-stalk and encounters a greedy giant. He ultimately vanquishes the giant with help from spinach that he accidentally eats from a giant can, and the nephews chow down on their sandwiches.