To make a home-cooked stewed cod fish.you can follow these steps。Ingredients。- Cod fish fillets。- Onion.chopped。- Garlic.minced。- Carrots.sliced。- Potatoes.diced。- Tomatoes.chopped。- Bell peppers.sliced。- Fish or vegetable broth。- Olive oil。- Salt and pepper to taste。- Herbs and spices of your choice (such as parsley.thyme.bay leaves)。