This is my basic cheese sauce recipe, I have used this for so long I can´t quite remember where I found it. It was one of the first things that I learned to cook for myself without the help of Mum. I used it to make Cauliflower Cheese. I use it to make some of the recipes on this site including, Tuna Bake.
The base of the sauce is a roux, which is the essential for lots of lovely white sauces. A roux is made by melting together a paste of flour, butter and seasonings before adding the liquid.