Jabberwocky (1977)

n the depths of the Dark Ages, a carnivorous monster ravages the domains of King Bruno the Questionable. Life carries on as normal in isolated villages; in one of which, innocent young Dennis Cooper pursues a career as a cooper in his ailing father's workshop. Mr. Cooper, senior, despises his son for valuing profit over craftsmanship, and when his illness becomes terminal he publicly disinherits Dennis in an abuse-ridden deathbed speech. Dennis decides to travel to the kingdom's capital city, establish a new career, and then return to marry his love, a local woman named Griselda Fishfinger who doesn't reciprocate his affection. While trying to say goodbye to an inattentive Griselda, she throws away a rotten potato which Dennis catches and keeps as a cherished memento.