Saccharomyces ellipsoides is a kind of yeast used in the production of alcoholic beverages such as beer and wine. It is a unicellular eukaryote that is characterized by an elliptical shape. Synonyms for Saccharomyces ellipsoides include Candida ellipsoides, Saccharomyces aellipsoides, and Hanseniaspora uvarum. These yeasts play an important role in the fermentation process, producing alcohol and carbon dioxide. They are also used in the production of sourdough bread, cheese, and certain fermented foods. Though they may seem insignificant, Saccharomyces ellipsoides and their synonyms are critical to the development and production of numerous food and beverage products.