Which among the following yeast strain is known as distillers yeast?

Correct option is A

Distiller’s yeast refers to yeast strains specifically used for alcohol (ethanol) production in distilleries due to their high fermentative capacity and alcohol tolerance.
Saccharomyces cerevisiae var. ellipsoideus is the standard distiller’s yeast, widely used for fermentation of molasses and grains to produce industrial alcohol and spirits.
It efficiently converts sugars into ethanol and can tolerate high sugar concentration and higher alcohol levels, which is essential for distillation processes.

Why other options are incorrect:

(B) S. cerevisiae uvarum (often written uvanim) → Mainly used in wine fermentation.

(C) S. cerevisiae carlsbergensis → Also known as Saccharomyces pastorianus, used in lager beer brewing.

(D) S. cerevisiae → A general species name; distiller’s yeast is a specific variety, not the whole species.