Daigo (醍醐?) was a type of dairy product made in Japan during the 10th century.
The first mention of this word was in Nirvana Sutra.
譬如從牛出乳 從乳出酪 從酪出生蘇 從生蘇出熟蘇 從熟蘇出醍醐 醍醐最上
From cows to fresh milk; fresh milk to cream; cream to curdled milk; curdled milk to butter; butter to ghee (daigo). Daigo is the best. - Nirvana Sutra
This is the origin of the word, daigo-mi (醍醐味), which means a superb flavor.Emperor Daigo encouraged the production of so and other cheese-like products. His name origin is thought to be based on the above text. Daigo is thought to have come from China, but it is no longer made in either China or Japan.