In the last century, with the development of biotechnology, scientists were surprised to find that: yeast, this marvelous microorganism, actually contains all dainty secret substances!

• 上世纪，随着生物技术的发展，科学家惊讶地发现：酵母这种神奇的微生物，居然潜藏着全部的美味秘密物质！