Preheat a medium pot to a medium heat. Melt the butter add the pepper. Now add the flour whisking it until it forms a light dough. Continue whisking for 30 seconds.

Reduce the heat. Now begin adding the cream bit by bit, whisking continuously so that it doesn't get lumpy. Do the same with the milk. Simmer for 5 minutes whisking constantly, add the salt. Add a bit more milk if it's too thick.

Remove from the heat. Stir in the cheese. Keep on stirring until all the cheese is melted. Enjoy.