Potato roll with crabs

3 servings

cook the roll in the usual way. for minced meat, the crabs, passaged with carrots and onions, are passed through a meat grinder.

potatoes - 1 kg, crabs - 300 g, onions - 80 g, carrots - 80 g, eggs - 1 pc., butter - 40 g, ground crumbs - 40 g, tomato sauce - 200 g, salt to taste