Now turn the heat down to its lowest setting and let the sauce cook for 5 minutes, whisking from time to time. While that's happening, taste and season with salt and freshly milled black pepper.

Whisk the 5 whole eggs in a bowl and season with salt and pepper. To make a béchamel sauce, melt the butter in a clean pan. Stir in the flour and continue cooking for a few minutes. Slowly add ...