Churn

April Proverb: It’s no use crying over spilt milk.
Google Translation: こぼれたミルクで泣いても無駄です。
“No weeping for shed milk” is referenced in the 1659 collection of proverbs by James Howell and later in 1678 by John Ray.
Closer to home, Canadian humorist Thomas C. Haliburton references the phrase, “there is no use cryin’ over spilt milk” in his 1839 book, “The Clockmaker; or the Sayings and Doings of Sam Slick of Slickville”.
Essential the saying means that once the “milk” has been spilled it cannot be recovered or it’s a waste of time worrying about things that cannot be changed.