White Sauce

• 18 fl oz (500 ml) milk
• 2 oz (50

Put the milk into a saucepan, place it on a medium heat and bring to the boil. Melt the butter or margarine until sizzling but not brown in a second saucepan. When it is sizzling, pour in all the flour in one go, remove from the heat and stir vigorously to a smooth paste. Pour in the hot milk, stir and return to the heat. Continue to stir and cook the sauce until it is thickened and no longer t