Rinse the rice (1/3 cup), then boil in salted water until al dente. Mix boiled rice and minced fish, add salt and ground black pepper to taste.
Grease the baking dish with butter and sprinkle with flour. Sew a French shirt. Divide the dough into two parts, roll out one part into a layer. Transfer the dough layer to a baking dish. Make a small side. Put the minced fish on a layer of dough and smooth it out. Roll out the second layer of dough, leaving a small piece for the subsequent design of the pie. Close the minced fish with a rolled layer, wrap the edges to the center. Lightly press the surface of the cake. In the middle, make a hole for the steam to escape, which is formed during baking.