4 fish filets of your choice, 2 tbsp butter, salt & pepper. For sauce: 1 stick butter, 1 tsp lemon juice, 1/2 tsp. salt, 1/4 tsp white pepper, 2 large eggyolks.
Season fish with salt and pepper, fry in non stick pan both sides until golden brown. Set fish aside & keep warm. Sauce: 1) melt butter in sauce pan until almost boil. 2) put all the other ingredients in blender on high for 10 seconds. 3) turn blender to low, remove top and slowly pour in melted butter in a thin stream. serve separatly from fish or on top.
Note: Serve with boiled potatoes