He wets his finger with the juices of her Pleasure
and then licks his finger clean:
This Wish Word can be a powerful tease for a Knight as
it will have him being very eager for her to say "Pleasure" (which may happen shortly after or not
until another Session).
As well as being used to instruct
him to wet his finger, if she touches herself to wet her finger, and
then presents this to him, her saying "Taste" tells him that he can
lick her finger clean.