What is a Mirepoix? And Mirepoix Recipe

Photograph of Mirepoix

Mirepoix is a combination of Onions, Celery, and Carrots, that are used as an aromatic base in cooking. Traditionally these vegetables are sautéed at low temperatures in either butter or oil to release their flavors then used as part of a finished dish or removed prior to serving. Mirepoix is common in French cooking and used as a base in soups, stews, and sauces.

The Standard Ratio for a Mirepoix two parts Onion, 1 part carrot, and

Mirepoix: two parts onion, one part carrot, one part celery

Common Questions People ask about Mirepoix

orange carrots on table
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What is the Recipe for Mirepoix?

Mirepoix is traditionally 2 parts Onion, 1 part Celery, and 1 part Carrot. Now the amount and the size of the knife cut will vary based on what recipe you are going to use the Mirepoix in. Some times the recipe will call for a precision knife cut, other times larger rough chops would suffice.

For example, when making a 1 gallon batch of Chicken Noodle soup, where the Mirepoix is going to be served as part of the finished dish, you would need around 4 cups / 950 ml of Mirepoix. In this recipe you would then small dice your vegetables and have 2 Cups of Onion, 1 Cup of Celery, and 1 Cup of Carrot.

But, when making a large batch of broth, you do not need to be precise with the knife cuts. Just make sure whatever size you do use, you stay consistent with all three vegetables so that they cook at the same rate. When Making a beef broth which will cook for 12 hours, you actually want to cuts to be larger. The carrots when in a smaller knife cut will break down and make your broth cloudy as they dissolve over the cook time.

What kind of onion do you use in Mirepoix?

Traditionally Yellow or White Onions are used in most Mirepoix recipes.

That is not to say you cannot use other varieties of onion when making a Mirepoix. It is worth noting that when developing standard recipes of your own, you should stay consistent with variety. Many Chefs use Brix, a measurement of sugar concentration, to determine when to stop the reduction of stock or broth. Since onions sugar content varies by variety this can lead to inconsistency.

bowl with fresh onions on marble table
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What is a Mirepoix?

Mirepoix is a combination of Onions, Celery, and Carrots, that are lightly cooked and used as an aromatic base in cooking. Traditionally these vegetables are sautéed at low temperatures in either butter or oil to release their flavors then used as part of a finished dish or removed prior to serving. Mirepoix is common in French cooking and used as a base in soups, stews, and sauces.

The Standard Ratio for a Mirepoix two parts Onion, 1 part carrot, and one part Celery.

How do you serve Mirepoix?

Mirepoix is traditionally not served as a stand alone dish, but as part of a soup, sauce, or it can be removed prior to serving.

Mirepoix is used often as way to introduce more depth and aromatics to a sauce, soup, or broth. Some dishes, such as Chicken Noodle Soup or Beef Stew, use Mirepoix as part of the finished dish. Other recipes, such as sauces like a Demi Glace or Velouté, will call for the Mirepoix to be used as part of the cooking process and then strained out prior to being served.

This Wisconsin Cheese Sauce Recipe is an example where Mirepoix is removed.

How do you cook Mirepoix?

When cooking Mirepoix, start on a low heat and add some butter or oil to a pan. First add your onions, and allow them a few minutes to cook, followed by your carrots and celery. Stir occasionally. The vegetables should not brown, but simply be sweated until the onions are translucent. This is the traditional method taught at most culinary schools. Cooking your mirepoix this way develops more flavor than simply adding the vegetables to a pot of liquid and bringing it to a simmer.

What is the Ratio for Mirepoix

The Standard Ratio for a Mirepoix is two parts Onion, 1 part Carrot, and one part Celery. In most home cooking applications measuring you mirepoix by volume ( Cups, mL, etc.) is acceptable.

It is worth noting that each of these vegetables have different densities and shape of knife cut can allow for more air space in your measuring vessel. As such, volume measurements are less accurate that using weight to measure. When working on a larger scale recipe, such as a stock or Demi Glace, it is best measure by weight. Not doing so can cause inconsistency in your final products.

Do you have to peel your carrots and onions for Mirepoix?

This is debated amongst chefs, but it is recommended to remove you onions peels, celery leaves, and peel your carrots when making Mirepoix. When the Mirepoix is going to be part of a finished dish this is especially important.

I strongly recommend that you do peel you carrots, remove onion skins, and remove celery leaves and bases. These parts of the vegetables often have some dirt attached to them. If you are trying to save time, it is much easier to remove these parts than it is to thoroughly clean them to the point where all dirt is removed. Not only for sanitation reasons, but also for the taste of your finished dish.

what is a mirepoix? Celery is one part.
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Can I Use Red Onions in Mirepoix?

Traditionally, Red Onions are not part of a Mirepoix recipe, but you can use them knowing that they may tint the color of the final outcome. Depending on what recipe you are making this may be an undesirable outcome. If you were making a beef broth, you would likely not notice this in the final dish. But in a Vegetable, Fish, or Chicken Broth this would be more apparent. Flavor wise you would have a hard time noticing the difference.

Is Mirepoix healthy?

Yes, Mirepoix is simply a combination of three vegetables. All healthy. Commonly people do not eat mirepoix as a dish though. Mirepoix is typically served as part of a dish, Chicken Noodle Soup is a good example of this. Otherwise it is used to flavor a sauce or broth and strained out prior to being served.

How Do You Cut Mirepoix?

There is not one single way to cute Mirepoix. The Shape and Size of the knife cut for Mirepoix depends on the intended use. The most important thing to remember is to cut your Onions, Celery, and Carrots about the same size. When using Mirepoix as part of the finished dish, most Chefs will use a knife cut that makes sense for how the dish is being served. In a Chicken noodle soup, the recipe will call for a small to medium dice traditionally. In a Rice Pilaf, the recipe would likely call for a Bruniose or small dice so that the Mirepoix is around the same size of the rice. In a Broth or Stock Recipe a larger cut is preferable to prevent the vegetables from breaking down too far and dissolving.

Published by Chef Ben Mogren

I am a professional Chef with over 20 years of Culinary Experience. I trained at the Culinary Institute of America. I spent my career working throughout the Napa Valley, The Four Seasons Resorts, The American Club, Lambeau Field, The Mayo Clinic, and as a Corporate Chef in Manufacturing Sauces and Sous Vide Items. My recipes focus on creating absolutely delicious food from easily sourced ingredients. They focus on proper technique and extracting as much flavor as possible out of common ingredients.

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