hi
I had read a lot of youtube videos before I first started trying to make some cheese sauce. The sauce I make looks good, but it's almost tasteless. I started with medium heat and some butter, as the butter melts, I pour some flour to it and mix them well with a stirrer (I don't know that English term). After some mixing I then pour cold milk into it (usually low-fat milk) and continue to mix everything with the stirrer, as the milk boils and evaporates I continue to add some milk for 3 times in total and then finally I put the cheddar cheese (cut into pieces) to it. Mixing is done at all times and heat is kept at medium or low.
The outcome is - it tastes like creamy stuff but without much taste