There are some basic sauces, that every good cook has to know. We've already entroduced you with some of them, and today is cheese sauce's turn. 

Ingredients:

500 ml. milk

4 tbsp. flour

50 gr. butter

100 gr.  cheese (50 gr. cheddar, 50 gr. blue cheese)

Preparation: 

Pour the milk into a pot. Add butter and flour. Constantly stir. After simmering, mixter will start to thicken, this is the time when you should add grated cheese. Stir until homogenous mixture. Serve with pasta.