shí bù yàn jīng , kuài bù yàn xì
lit. to eat but finely ground grain and finely chopped meat (idiom, from Analects)
fig. to be fastidious about one's food
食
shí
to eat
不
bù
no; not so
厌
yàn
(bound form) to loathe; to be fed up with
精
jīng
essence
,
,
脍
kuài
chopped meat or fish
细
xì
thin or slender