sweeten the kitty

sweeten the kitty

Also, sweeten the pot or deal . Make something financially more attractive, as in I am unable to give you the new title but I could sweeten the kitty a little by giving you a raise . This idiom comes from card games such as poker, where it means "add money to the pool," and uses sweeten in the sense of "make more agreeable." [Slang; c. 1900]
See also: kitty, sweeten