whet someone's appetite
US /wɛt ˈsʌm.wʌnz ˈæp.ə.taɪt/
UK /wɛt ˈsʌm.wʌnz ˈæp.ə.taɪt/

1.
食欲をそそる, 興味をそそる
to make someone want more of something or to make someone interested in something
:
•
The preview of the movie really whetted my appetite for the full film.
映画の予告編は、本編への期待を高めた。
•
The small sample of cheese only whetted her appetite for more.
少量のチーズは、彼女の食欲をさらに刺激しただけだった。