Steep the bean curd in hot water for about 15 minutes. Drain, handling with care to keep each cake whole. Cut each cake into 3 slices. Lay the rectangular slices flat on paper towels to absorb excess water.
Prepare the stuffing. Put the minced haddock in a bowl. Add the salt and stir vigorously in the same direction for about 1 minute, until gelatinous in texture. S