Prepare the ingredients required from the list in the recommended quantities. Clean fresh fish inside and out, rinse with water, remove bones and dry with a paper towel. Thaw frozen fish, rinse with water and dry with a towel. Peel the onions and carrots and wash them with water to remove debris and dirt.
Cut the peeled onion into thin half rings, cut the carrots into small strips and place the vegetables in a frying pan heated with oil to fry until soft and golden for 3-4 minutes.
Add millet grains washed with water to the vegetables, add fish cut into pieces, sprinkle the dish with salt and pepper and pour in hot water. Cover the pan with a lid and simmer the porridge with fish over low heat for about 30 minutes. Stir the ingredients periodically, when the porridge is ready, taste it and add salt and pepper if necessary.
Serve the aromatic millet porridge with juicy hake and vegetables hot, placing the dish in portioned plates and adding a salad of fresh vegetables and herbs.