A diff visualization for ingredients should be pretty easy, you could show left and right and the delta between them as three distinct columns. As for other di

A diff visualization for ingredients should be pretty easy, you could show left and right and the delta between them as three distinct columns. As for other distinctions, such as "mince" instead of "dice", that would be tricker, but you could probably do that with a human-friendly strikethrough coupled with a handwriting typeface to indicate what was changed.