Making a great mac and cheese sauce can really elevate your dish! Typically, you'll start with a roux, which is made by melting butter and whisking in flour until smooth. Then, gradually add milk and stir until the mixture thickens. Add your favorite cheeses, like cheddar or Gruyere, and stir until melted. Season with salt, pepper, or even a pinch of nutmeg for an extra layer of flavor. Do you have a specific kind of cheese you love to use? I'm happy to help customize your recipe!