I know lots of women who like scotch…but they always run into someone who seems surprised about that.
Kudos on the note - that’s the part that will “stick” - and could be put into a promotion file potentially. It would be nice if your child also took the time to write a gracious email.
Personally, I’d bring a bottle of something, just because it’s less socially awkward to show up at the door with a small gift. (And congratulations! Sounds like a wonderful professor-student connection!)