Mashed potato and green peas crabs

1 serving

when tempering, mashed potatoes and green peas are placed next to finely chopped crabs and watered with sauce or released with butter.

canned crabs - 40 g, potatoes - 120 g, margarine - 5 g, milk - 25 g, green peas - 20 g, tomato sauce - 30 g, or Dutch sauce - 30 g, or butter - 5 g