I never had donkey meat before, but Dan Niu said (9:18 to 9:23) that the soup made with donkey meat had an umami taste and a sweet aftertaste. Intrigued, I searched online where that umami and sweet taste had come from. I found an article on the website of the U.S. government's National Library of Medicine. According to this article, cooking treatment altered the metabolite and lipid composition in cooked donkey meat. In cooked donkey meat, substances such as maltotriose, L-glutamate, and L-proline significantly increased, leading to more intense umami and sweet taste in cooked donkey meat - or in the soup made with donkey meat, as it is in this case. There is always something in Dan Niu's video that intrigues me.😄 Thanks for sharing!