useless trivia: What Word Means: Swore - Promised?

Questions

Food: This breakfast cereal has a leprechaun mascot.?

Food: The flop 1960's diet drink Minivitine was a spinoff of this drink mix.?

Food: This film inspired the snack food Screaming Yellow Zonkers.?

Food: The beer introduced in 1961 to take the head off sales of imported beers.?

Gals Named Mary: Her 1818 novel of terror is more widely remembered than her husband's poetry?