1958, Chinua Achebe, chapter 11, in Things Fall Apart:
Ezinma and her mother sat on a mat on the floor after their supper of yam foo-foo and bitter-leaf soup.
1991, Elechi Amadi, The concubine, page 45:
There was so much fish and meat in the soup that they had to put them on a separate plate, to facilitate the free movement of their balls of foo-foo in the soup
2007, Elphinstone Dayrell, Folk Stories from Southern Nigeria, page 35:
The king, however, refused to do this; but as he was rather sorry for the tortoise, he said he would present him with a magic foo-foo tree, which would the tortoise and his family with food, […] Every day it dropped foo-foo and soup on the ground.