Baked cqthi salmon (welsh)

1. Eog cothi o"r ffwrn wash the salmon in salted water, dry, trim and cut into steaks.
2. Line a roasting tin with baking foil and coat the foil with butter.
3. Place the fish steaks on the foil.
4. Seasoni with salt and pepper and top each with a knob of butter.
5. Cover with foil and bake in a fairly hot oven (400°F.
6. Or mark 6) for 20-25 minutes.
7. Peeli and slice the cucumber and saute gently in butter in a saucepan.
8. The sauce : whisk the egg yolks, vinegar and seasoning in a basin over hot water until the sauce thickens.
9. Add 2 oz. butter, a small piece at a time.
10. If the sauce becomes too thick add a little hot water.
11. When the fish is cooked, place it on a large plate, and surround with the cucumber slices.
12. Serve with the egg sauce.