かすうどんMeanings1nounudon with deep-fried beef offalfood / cookingA regional dish, especially associated with Osaka. The soup contains 油かす (aburakasu), which is deep-fried beef offal.See also: 油かす大おお阪さかに来きたら、かすうどんを食たべてみたい。When I come to Osaka, I want to try kasu udon.