Sarpir-maṇḍa - Wikipedia
https://en.m.wikipedia.org/wiki/Sarpir-ma%E1%B9%87%E1%B8%8Da
Sarpir-maṇḍa (Sanskrit: सर्पिर्मण्ड) was a type of dairy product, from five stages of milk described in Hinduism and Buddhist texts.
TIL नवनीत means "butter".