What is yeat cat?

As an AI language model, I am not sure if you meant "Yeast" or "Yeat," but here is some information about both.

Yeast:

Yeast is a type of single-celled fungus that belongs to the kingdom Fungi. It is widely used in the food industry for baking, brewing, and as a flavor enhancer. Yeast can be found naturally in the environment, such as on fruit skins, in soil, and in the air. The most commonly used yeast for baking is Saccharomyces cerevisiae, while brewer's yeast is a type of Saccharomyces that is used in beer and wine production.

Yeat:

As a language model, I am not familiar with a term or object called "Yeat." Could you give me more information about it so that I can provide you with the relevant information?