How to make
Put the piece of butter in a preheated small pan and wait for it to melt.
Then add 2 tbsp. of flour and mix it gently, until a homogeneous mixture is obtained.
The next step is to add the milk and leave the liquid to reduce for about 5-7 minutes.
At the end of the preparation of the appetizing sauce, add the cheddar slices and stir again, until a homogeneous mixture is obtained.
Leave the cheddar sauce to reduce to the desired consistency.