Roll a lump of butter in flour, put it in a pan on the fire, and as it melts add pepper and salt. Stir it, and as it thickens add a little milk; let it simmer and keep on stirring it. You will never get a good white sauce unless you season it well and let it simmer for a quarter of an hour. Strain it, heat it again, and serve it for fish, potatoes, chicken.