yì​kǔ​fàn

poor-tasting meal

忆苦饭 (憶苦飯) yì​kǔ​fàn
poor-tasting meal noun
figuratively, any meal that tastes very bad or is of extremely poor quality
remembrance meal
an unsavory meal consumed during political movements to recall past hardships and contrast them with the present

Frequency

Written text
0.050 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)