When you’re making a roux, you are combining butter and flour to thicken sauces and create deliciously rich consistencies.

When it comes to rich, luscious sauces, these two French favorites, hollandaise and mornay, are always at the top of the list ...

Delia' shows you how to make béchamel sauce, using a mixture of butter and flour called a roux. A béchamel sauce ... which might have cheese or other flavourings added to it.

The next step is to make the cheese sauce by melting butter over medium heat and stirring in the flour. Cook for one to two minutes to form a roux, stirring continuously to avoid burning.

Roux can be stored in a cool place ... taste and correct the seasoning if necessary. Spoon the sauce over the cauliflower and sprinkle with more grated cheese. The dish may be prepared ahead ...

Make a roux by melting the butter in a saucepan ... Add the pasta to the cheese sauce and stir. Add the cooked pancetta or bacon and combine through. Season with salt and pepper and garnish ...