To obtain a yeast strain capable of affording methionol-rich alcoholic drinks with good flavor by growing a yeast strain belonging to the genus Saccharomyces in a medium containing ethionine at such concentrations as not to be viable for the strain to produce an ethionine-resistant strain from which the aimed yeast strain having the ability to produce methionol is then isolated.
This yeast strain having the ability to produce methionol is obtained by growing a yeast strain belonging to the genus Saccharomyces in a medium containing ethionine at such concentrations as not to be viable for the strain followed by isolating the aimed yeast strain viable in the medium namely, resistant to ethionine; wherein the parent yeast strain is pref. such one as to belong to Saccharomyces cerevisiae. A preferable example of the objective yeast is a Saccharomyces cerevisiae ME2-3 strain (FERM P-16935), a kind of whisky yeast, derived from Saccharomyces cerevisiae IFO 0234 yeast as the parent strain.
YODA TAKASHI
HIGUCHI TAKESHI
SHIMAZU YOSHIMI
HARADA MICHIO
