What is "shottsuru"

n. A pungent Japanese fish sauce, usually made from sandfish.

200px|thumb|"Akita shottsuru" made from hatahata (left). The other bottle is ishiru made from sardine. Shottsuru (塩魚汁) is a pungent regional Japanese fish sauce similar to the Thai nam pla. The authentic version is made from the fish known the hatahata ( Arctoscopus japonicus or sailfin sandfish), and its production is associated with the Akita region.