@Fragglemuppet Memory Alpha/Beta doesn't seem to know anything about this.
That sibling comment with the LD dialog seems like it might be winking at some fandom...
Here are some ao3 works that came up. There are quite a few:
https://archiveofourown.org/works/853475 [2013]
https://archiveofourown.org/works/104119 [2010]
https://archiveofourown.org/works/27884 [2009]
He hurriedly made excuses for the two of them to quickly get back on the ship as he noted two things: one, Spock drunk on chocolate was the hottest thing he'd ever seen, and two, chocolate would now definitely be a regular staple on the Enterprise.