Yeah I understand that part, my question is about showing the scraped data to your users.
https://www.yummly.com/ used to have a paid API for recipe search and currently still lets users search their index. Did they have to go and get permission from each site that they index or is it fair use?
It looks a shade more detailed than google's recipe cards, they link back to the original source for the instructions, I would bet they didn't get permission, and that they count as a fair-use search engine. The law isn't (can't be) perfectly prescriptive here, there's some line that you have to sue about to know if it has been crossed.
