shí​bù​yàn​jīng, kuài​bù​yàn​xì

fastidious

食不厌精,脍不厌细 (食不厭精,膾不厭細) shí​bù​yàn​jīng, kuài​bù​yàn​xì
fastidious
To be extremely meticulous, picky, or sophisticated regarding the selection, preparation, and presentation of food.
fine preparation
To not object to having grain finely cleaned and meat finely minced; preferring the highest quality of food preparation as mentioned in the Analects.

Sources

Definitions
CC-CEDICT