I don't do anything too sophisticated, just something like:
Scan this image of a recipe and format it as JSON that conforms to the schema defined at https://schema.org/Recipe.
Sometimes it puts placeholders in that aren't valid JSON, so I don't have it fully automated.. But it's good enough for my needs.
I've thought that the various Nextcloud cookbook apps should do this for sites that don't have the recipe object.. But I don't feel motivated to implement this myself.
That's a very low bar ><
Also because of first past the post, most people's votes don't in fact matter. So personally I like to aim a bit higher.