ichidan verb, transitive verb
Literal sense: to boil a liquid until it reduces and thickens, or to concentrate a substance by boiling.
だしを煎じ詰めて、濃いスープを作る。
Boil down the broth to make a thick soup.
ichidan verb, transitive verb
Figurative sense: to distill a matter down to its core point after thorough consideration. Often used in conditional clauses such as 煎じ詰めれば.
問題を煎じ詰めれば、結局はお金の問題だ。
If you boil the problem down, it's ultimately a matter of money.