Appearance: observe the appearance, including color and clarity.
Clarity: Most varieties of sake are clear. Except for nigorizake and so-called unfiltered sake,
which are intended to have a cloudy appearance, any turbidity in bottled sake
indicates that it has not been properly filtered. Although not to the same extent
as wine, sediment may form in bottled sake that has been stored for a long time.
Color: Colorless, transparent sake is filtered using active charcoal to stabilize the quality. This treatment removes impurities and color. Sake that is not treated
with active charcoal may retain a pale yellow color.
The color of koshu, or sake that has been aged for a long time, ranges from
gold to dark amber. This color results from the reaction of the sugars and amino
acids in the sake.
Sake also discolors if it is stored at high temperature or exposed to light for
a long period. uwadachika (orthonasal aroma): evaluate by bringing the vessel up to
the nose and smelling the aroma given off…