Coming soon to a dev recipes site near you: post after post starting with a four paragraph retelling of a trip to the countryside, the packing for which made the writer think of custom aggregation functions...
EDIT2: replaced statement of fact about WHERE/HAVING with this message.
I've been looking for a decent application where I can import recipes, and add my own ones, keeping them private (because I didn't make them, but also allowing them to be released if I did invent them and want to share). A kind of Git for recipes, if you will. I've seen a few ones, but they always lack in one way or another: bloated Electron crap, small database or bogus content, or terrible UI.