Then add in the milk (or you can replace it with 1/2 cup of whipping cream and 1/2 cup of water). Start with 1/4 cup and keep whisking it until it looks smooth. Keep adding the liquid slowly while whisking it.

Wait until you can see the little bubbles (it means your liquid is hot enough).

Turn off the flame, and add in the shredded cheese and whisk it until the cheese melt. Then add a dash of crushed black pepper.

You can stop here. But adding a dash of ground paprika, onion powder, garlic powder and ground celery will take it to a better taste!