Meaning
がん漬 (がんづけ[?], Ganzuke) is Pickled crab — a Japanese food (pickled salted or fermented, viscera).
What is Pickled crab?
Ganzuke is a shiokara dish, made from pickeld fiddler crab. It is local to the Ariake sea coast. Shiokara is made from small pieces of meat in a brown viscous paste of the crab's heavily salted, fermented viscera.