I promise, roux (pronounced “roo”) is not nearly as scary as it sounds. It’s actually a fairly simple mixture that goes a LONG way in making your everyday cooking easier / better.
All that a roux is made of is a fat, a starch, and a liquid. For white sauces like alfredo, this is butter, flour, and milk. It could be sausage grease, flour, and milk in a sausage gravy. It could be oil, cornstarch, and chicken stock in a slightly thickend Almond Chicken sauce. Just about anything that combines these three elements qualifies as a roux.
The benefits of this concoction are that it acts as both a stablizer and a thickener. The fat binds the starch molecules so that when they are exposed to heat and explode (ok, it’s not quite that dramatic, but a fun image) they have enough structure to trap liquid and thicken it rather than becoming lumpy. The higher the ratio of fat and starch to liquid, or the longer it’s heated (to a point) the thicker the liquid gets.
The benefit of this is that other things can be suspended in the “web” that the fat and starch create. Everything from cheese to chicken to spices can also be suspended, creating the creamy sauce we all imagine.
So, imagine my surprise when I pick up a shredded cheese blend from the store yesterday to make some homemade mac and cheese. I look at the back of the package, to see what they suggest, and they give instructions to boil the cheese with pure milk and dump in noodles.
While, at the surface, this appears to be a good idea, it would end up being a greasy, lumpy mess that wouldn’t really taste, look, or feel appetizing. The cheese grease would float to the top of the milk while the solids would sink to the bottom and get slightly gritty. Yuck.
So, don’t be afraid of a little roux. Want to try it yourself? A basic roux to experiment with:
2 Tbsp butter (melt over low heat or in the microwave)
2 Tbsp flour (whisk into the butter with a fork or whisk)
Slowly add 1 cup milk, stirring or whisking. Heat, stirring often, until it begins to thicken.
You usually want to add at least a little salt to roux, since all three ingredients can be a little bland without spice.
There you go! Add a few handfuls of shredded cheese before the milk (it will look like a solid mass, but it will smooth out once you add liquid), some garlic, and a bit of salt and pepper. Pour over noodles, and you’ve got homemade mac and cheese.
Or, use the white sauce with some extra milk, toss in diced-up leftover ham and pototo chunks for a darn good soup.
Or toss in parmesean and feta cheese for a greek sauce to pour over spinach and chicken.
The possibilities run far and wide. Don’t be afraid of roux!

