Sir Paul's Potatoes

If you dare, watch Paul McCartney making mashed potatoes. I found this difficult to watch for any number of reasons. Sir Paul comes close to slicing off his fingers several times, stirs the pot with the point of a knife, uses margarine, and talks about "organic sea salt," but perhaps those can all be seen as enchanting little Paulisms like "Thank you very mooch, spoon-man" (and thanks to Grow a Brain for this one).
If you need to restore your eyeballs and soul after this experience, have another look at Abbie Hoffman z"l making gefilte fish.

Here's a collation of references to food in the music of the Beatles.