Torulaspora delbrueckii is a yeast species which is also known as Saccharomyces delbrueckii or Saccharomyces rosei (anamorph called Candida colliculosa).

The genetic analyses have revealed that the various strains

Strain (biology)

In biology, a strain is a low-level taxonomic rank used in three related ways.-Microbiology and virology:A strain is a genetic variant or subtype of a micro-organism . For example, a "flu strain" is a certain biological form of the influenza or "flu" virus...

 treated as T. delbrueckii actually represent different species (and belong even to different genera, like Debaryomyces

Debaryomyces

Debaryomyces is a genus of yeasts in the family Saccharomycetaceae....

, Saccharomyces

Saccharomyces

Saccharomyces is a genus in the kingdom of fungi that includes many species of yeast. Saccharomyces is from Greek σάκχαρ and μύκης and means sugar fungus. Many members of this genus are considered very important in food production. One example is Saccharomyces cerevisiae, which is used in making...

and Candida

Candida (genus)

Candida is a genus of yeasts. Many species are harmless commensals or endosymbionts of animal hosts including humans, but other species, or harmless species in the wrong location, can cause disease. Candida albicans can cause infections in humans and other animals, especially in immunocompromised...

). Thus, the criteria of the species T. delbrueckii apparently needed some revision according to the type strain (the strain SANK 50118).

One interesting usage of T. Delbrueckii (and quite possibly one or more of the similar Saccharomyces strains) is in brewing German-style wheat beers. During fermentation the yeast produces noticeable banana-esters and clove-like phenols which impart the distinct aroma typified by these beers.