55381
This is usually in the form of " wat , " a thick stew , served atop " injera " , a large sourdough flatbread , which is about in diameter and made out of fermented teff flour .
 wat, injera, sourdough, flatbread
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 wat, injera, sourdough, flatbread