At least it suggested non-toxic glue… That suggests some context about recipes needing to be safe is somehow present in its model.

Most likely this has nothing to do with "recipes being safe" being in the model

It seems the glue thing comes from a reddit shitpost from some time ago. There's a screenshot going around on twitter about it[0](11 years in the screenshot but no idea when it was taken)

It specifically mentions "any glue will work as long as it is non-toxic" so best guess is that's why google output that

[0]https://x.com/kurtopsahl/status/1793494822436917295?t=aBfEzD...

It is indeed from 11 years ago. Here's a direct link to the Reddit post: https://www.reddit.com/r/Pizza/comments/1a19s0/my_cheese_sli...

The thing about that is that polyvinyl acetate is that's what's in elemers glue and is also used in chewing gum, and chocolate and to make the surface of Apples more shiny, so you're probably eating glue, we just don't like to call it that. emulsifier is a better description.