勾兌

to blend various types of wine (or spirits, or fruit juices etc)

surname Gou

to attract / to arouse / to tick / to strike out / to delineate / to collude / variant of 鉤|钩[gou1], hook

see 勾當|勾当[gou4 dang4]

surname Dui

to cash / to exchange / to add (liquid) / to blend / one of the Eight Trigrams 八卦[ba1 gua4], symbolizing swamp / ☱