expression, ichidan verb
understand the essence; catch the main points
Idiomatic expression meaning to grasp the key points or the heart of a matter. Often used when someone knows what is important or how to do something effectively.
See also: 壷 (つぼ)
彼は料理のつぼを心得ている。
He knows the key points of cooking.
商売のつぼ
It's a way that shows an understanding of the essence of business.