humble term for sake; low-grade sake (humble)
Humble language (kenjougo) used to refer to one's own sake, implying it is of low quality out of modesty. Not used for others' sake.
This is just some humble sake, but please help yourself.
humble meal; simple fare (self-deprecating)
Compound of 粗 (そ, 'coarse, crude') and 酒 (しゅ, 'sake'). The reading そしゅ follows standard on'yomi.