Roux is a mix of flour and fat that is used to thicken sauces, broths, and gravies.
Sources of fat vary. Some recipes call for oil, some use butter, others use rendered meat fat.
using different fats will result in different types of Roux. A light Roux does not add much flavor to what it thickens but it thickens very well. A darker Roux will lend more flavor to a dish but will not thicken as well as a light Roux.
Darker Roux will be made using oil instead of butter. The longer it is cooked the darker it gets. The darker it is the more flavor it adds.
Step 1: Assemble Your Ingredients
liquid you want to thicken
for a nice thick stew use a 1:1:1 ratio
for every cup of liquid you want to thicken combine 1 tablespoon of butter with 1 tablespoon of flour
Step 2: Cook
Melt the butter in a saucepan.
Stir the flour in with the butter until well blended.
Once it is blended it can be used, or you can continue to cook the Roux to change how it affects the taste and thickness of your dish.
Continue to stir the Roux as it cooks.
I like to wait until the Roux achieves a rich peanut butter color before i consider it ready to use. This gives a nice balance between the flavor it adds to the dish and the thickness it provides.
Step 3: Use Some Now .. Save the Rest for Later
The best way to use the Roux is to slowly incorporate the liquid you are trying to thicken a small amount at a time. This will help to avoid lumps.
Stir the liquid and the Roux together until well blended.
Once you have you mixture to the consistency of a thick gravy you can add it to the rest of the liquid.
If you make more Roux than what you will need you can freeze what you don't use.
An easy way to portion it for the freezer is put your Roux into ice cube trays and freeze it solid. once it is frozen you can individually wrap the Roux in wax paper and store them together in a ziploc bag.
It will keep in the freezer for 6 months.
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