A brilliant trick for cooking salmon that everyone should know

Ingredients: 2 Egg Yolks 600g Salmon Fillet 3 Slices of Cheddar Cheese 3 Slices of Mozzarella Cheese Wheat Flour Beatted Eggs Panko Breadcrumbs Olive Oil Sauce 50g Unsalted Butter 50g Wheat Flour 700ml Milk 1 Pinch of Salt 1 Pinch of Black Pepper 1 Pinch of Nutmeg 150g Grated Cheddar Cheese