Using it to toast friendship would indeed be most appropriate. A tad of gratitude then becomes threefold. It can't turn into tenfold, for that would be too fake; three is not too many, nor too few—just right.
The Aftertaste cocktail was precisely what Gaven would concoct each day after sending Philancy away, using his abilities—one glass per day, no more, no less.
Philancy accepted the wine box. It was clearly not heavy, yet it felt heavier than a thousand gold, and she sighed, "You're always considering my needs, while I've done nothing for you."
"Teacher, please don't say that. Compared to the knowledge you've imparted to me, these little things are truly nothing." Gaven had essentially figured out Philancy's character over the past few days.