Question

Where is yeast formed? ​

Answer 1

They are commonly found on plant leaves, flowers, and fruits, as well as in soil. Yeast are also found on the surface of the skin and in the intestinal tracts of warm-blooded animals, where they may live symbiotically or as parasites. The common "yeast infection" is typically caused by Candida albicans.

Answer 2

Hey here is your answer....

They are commonly found on plant leaves, flowers, and fruits, as well as in soil. Yeast are also found on the surface of the skin and in the intestinal tracts of warm-blooded animals, where they may live symbiotically or as parasites. The common "yeast infection" is typically caused by Candida albicans.
The manufacturing process for yeast can be likened to farming – it involves preparation, seeding, cultivation and harvesting.
As you learned in The Story of Yeast, the favorite food for yeast is sugar. In the commercial production of yeast, molasses is used to provide this sugar source. Molasses is a by-product of the refining of sugar beets and sugar cane. Either cane molasses or beet molasses can be used, however, some yeast manufacturers prefer a mixture of the two varieties.

Hope it is helpful to you....