Why did my cheddar sauce turn grainy?
Usually it is one of three things: the heat was too high when the cheese went in, you used pre-shredded cheese (anti-caking agents can mess with melt), or the sauce got cooked too long after adding the cheese. Fix: take it off the heat, whisk in a splash of warm milk, and keep it moving. If it is still grainy, an immersion blender can help smooth it out.
Can I make cheddar cheese sauce without flour?
Yes. Use a cornstarch slurry: 1 tablespoon cornstarch + 2 tablespoons cold milk. Warm the milk in a saucepan until steaming (not boiling), whisk in the slurry, and simmer for 30 to 60 seconds until lightly thickened. Remove from heat, then melt in the cheese gradually. This version is a little glossier and slightly less rich than a roux-based sauce.
What is the best cheddar for cheese sauce?
Sharp cheddar gives the most flavor. For the smoothest melt, a younger sharp cheddar works great. Super aged cheddars can be a bit oilier. If you want extra insurance, swap in 2 ounces of a great melter like Monterey Jack for part of the cheddar.
How do I thin the sauce for nachos or fries?
Whisk in warm milk a tablespoon at a time until it is pourable. Keep the heat low so it stays smooth.
Can I use this for mac and cheese?
Absolutely. Keep it a touch thicker (do not add extra milk at the end), then toss with 8 ounces of cooked pasta. For baked mac, stir in the pasta, top with buttered breadcrumbs, and bake until bubbly.