V-ERG
(使)(牛奶或雞蛋)凝結；（使）結成凝乳
If milk or eggs curdle or if you curdle them, they separate into different bits.
例句
The sauce should not boil or the egg yolk will curdle...
調味汁不能煮沸，不然蛋黃會凝結的。
The herb has been used for centuries to curdle milk.
那種香草幾個世紀以來都被用來制作酸乳。