Swedish herring casserole

Ingredients for 4 servings:

• 600 g fish fillet(s) (matjes fillets)
• 250 ml milk or water
• 4 onions
• 80 g butter
• 500 g potatoes
• 250 ml cream
• Salt
• Pepper, white
• Butter, for greasing

Instructions

Working time approx. 20 minutes; Rest time approx. 4 hours; Total time approx. 4 hours 20 minutes

Place the herring in a bowl, pour milk or water over it to cover, and soak for about 3-4 hours. Slice the onions and sauté for 5 minutes until translucent. Thinly slice the potatoes. Rinse the fillets, dry them, and cut them into strips. Grease a baking dish generously. Add half of the potatoes, season with salt and pepper, scatter the onions over them, then add the fish strips, and finally, top with the remaining potato slices. Season with salt and pepper again. Pour the cream over the top (reserve some of the cream and pour it over 30 minutes before the end of baking). Sprinkle with breadcrumbs and flakes of butter and bake for about 1.5 hours at 200°C. Serve with beetroot or salad.