PURPOSE: To prevent discharge of tasty components and nutritive components in raw material meat and to obtain high-quality meat bleached with water, suitable as a raw material for fish paste product, by adding bleaching water to picked meat, subjecting to reduced pressure to float and remove fats and then finely grinding the meat.

CONSTITUTION: Picked meat of fresh fish or frozen fish is blended with preferably 3-10 times as much beaching water as the picked meat, subjected to reduced preferably under ≤200Torr, floating fats are removed by scooping, etc., and then fine ground until thickness of fibers becomes 1-2μm to give the objective meat bleached with water.