Baked Fish with Vegetable Marinade

Chop the onion and transfer it to a skillet.

Coarsely grate the carrot and add it to the onion.

Sauté for a couple of minutes, then add the minced garlic.

Stir two spoonfuls of tomato paste into a glass of boiling water, mix well, and pour over the vegetables.

Add the bay leaf, season with salt and pepper, and pour in the vinegar.

Simmer everything together for about 10 minutes.

Cut the fish fillet into portioned pieces.

Place a portion of the vegetables at the bottom of a baking dish, add a layer of fish, and top with the remaining vegetables.