藍あい汁しる

noun

indigo-dye byproduct; lime-fermented indigo leaf mixture after dye precipitation

Technical term from traditional indigo dyeing (藍染め). Refers to the residual mixture of lime and fermented indigo leaves left after the indigo pigment has settled out. Not a common everyday word.

• 藍あい染ぞめの工こう程ていで、藍あい汁しるは染せん料りょうが沈ちん殿でんした後あとに残のこる。

  In the indigo dyeing process, 藍汁 remains after the dye has precipitated.