The fish should be cleaned, dried off, and then cut into 4-5 cm pieces. To make the strips waterproof, place them in a plastic bag and chill for about 30 minutes. For me, brown paper bags work wonderfully.
The potatoes should be prepared by peeling and chopping them into inch-sized cubes.
Place the potatoes in a bowl, add 2 tablespoons of baking powder, and cover with water. Give it fifteen minutes to soak.
Heat 2 inches of vegetable oil to 140–150 C in a big pot. Potatoes should be drained and thoroughly dried between paper towels.
Fry the potato cubes in a few teaspoons of oil over high heat until they are golden brown.
Sauté the fish in hot oil till it turns golden, then drain it and reheat it in a 10°C oven.
After the potato has finished cooking, put the remaining oil back on high heat and, when it begins to smoke, add a tablespoon of flour.
Stir continuously, and keep adding the remaining flour.
If you want your meal to be brown when it is done. It's a good idea to let the flour in your fish and chips recipe brown before adding the milk.
Once it has beautifully browned, add about 1/2 cup of milk. Don't add too much milk, please. Stir often until the gravy is nicely thick.
Add salt and pepper to taste. Then, serve the fish pieces with the sauce. Add other ingredients like paprika or cayenne pepper to intensify the flavor even more. Serve immediately with chips and, if preferred, top with green onions. Enjoy!