You can get a LOT of the food bits out of a keyboard by holding it upside down and thumping the side of it with the heel of your hand.
When that fails, you can fashion a keycap remover from two paperclips bent into squared-off U shapes. Just slip them under opposite corners of the key that no longer works because of the food that is jammed underneath it, and pull straight up. Really. You can do this. What you find is disgusting, but your keyboard ends up working much better after you remove all the organic matter.
And once you have mastered the keycap removal and replacement, think of the fun you can have with colleaguesâ keyboards⊠almost as much fun as a strip of Scotch tape across the mouse ball.