Learn how to make a white sauce in this simple how-to video from the Good Housekeeping Institute Cookery School. Make a classic white sauce for macaroni cheese or lasagne with our step-by-step video.

Ingredients:
50g (2oz) butter
50g (2oz) plain flour
600ml (1 pint) milk
Grated nutmeg, optional

1. Melt butter in a pan over a low heat. Add flour and cook for 1min, stirring continuously, until mixture is smooth, thick and no floury lumps remain.

2. Turn off heat and slowly add milk a little bit at a time, stirring continuously to make sure there are no lumps. When combined and smooth, turn heat back on and keep stirring, making sure to get spoon into bottom and edges of pan.

3. Once sauce boils, it should start to thicken. Change to a whisk and whisk constantly, simmering sauce for 2min, to cook out floury taste and make sauce glossy.

4. Season to taste. To enhance flavour, add a little freshly grated nutmeg.

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