How to Thicken a Sauce or Soup - The Veggie Table (2024)

Difficulty level: Easy

Sometimes you can boil a sauce or soup long enough to obtain the perfect thickness, but that’s not necessarily efficient or nutritious, so here are some easy ways to thicken without cooking for an extra hour.

Make a roux

For some reason, the thought of making a roux strikes fear into some cooks’ hearts the same way soufflé does, but making a roux is actually very simple, especially for small amounts. All you need is some kind of fat (such as butter or olive oil) and an equal weight of all purpose flour. As for how much of each ingredient, it depends on the type and amount of liquid you’re trying to thicken:

  • To thicken 2 cups of sauce, use 1 oz fat + 1 oz flour
  • To thicken 4 cups of sauce, use 2 oz fat + 2 oz flour
  • To thicken 2 cups of soup, use 1½ oz fat + 1½ oz flour
  • To thicken 4 cups of soup, use 3 oz fat + 3 oz flour

If you find that the consistency is still not right, make a bit more roux next time.

As for how to make the roux, it’s very simple:

  1. Over medium heat, melt the butter or heat the oil until just warm.
  2. Slowly sprinkle in the flour, whisking constantly.
  3. Continue cooking and whisking the thick paste that forms for 2-3 minutes, until pale yellow. This is called “white roux” and can be used for béchamel and other milk- and cream-based sauces and soups.

At this point, you can either make the sauce or soup right in the same pan (slowly start adding liquid, stirring constantly, and complete the recipe as usual), or you can use this roux to thicken a soup or sauce you’ve already made. To do this, slowly pour some of the warm soup or sauce into the roux, whisking constantly, until completely incorporated, then add the mixture back into the pot, stir well, and let simmer for about 5 minutes, until hot and thick.

The trick to roux is to make sure to add the liquid slowly and get all of the lumps out before you add it into the main recipe. It’s a lot easier to find lumps and get rid of them in a few ounces than in a few cups!


Other ways to thicken

To thicken small amounts (a cup or so) of soup or sauce, you don’t even need to make a roux.

Flour: put 2 t flour in a bowl with with a few ounces of whatever you’re making, mix well, and then add back into the soup or sauce. Simmer until thickened.

Arrowroot or corn starch: Place a T in a bowl with a T of cold water or other liquid, mix well, and add to the soup or sauce. Simmer until thickened.

Cashew butter: only if a slight sweetness is acceptable. Transfer a bit of the soup or sauce to a bowl, stir in a T or two cashew butter until it dissolves, then transfer this mixture back into the soup/sauce. Heat another few minutes, stirring frequently.


Sauce Recipes


Soup Recipes

How to Thicken a Sauce or Soup - The Veggie Table (2024)

FAQs

How to Thicken a Sauce or Soup - The Veggie Table? ›

All you need is some kind of fat (such as butter or olive oil) and an equal weight of all purpose flour. As for how much of each ingredient, it depends on the type and amount of liquid you're trying to thicken: To thicken 2 cups of sauce, use 1 oz fat + 1 oz flour. To thicken 4 cups of sauce, use 2 oz fat + 2 oz flour.

How to make veggie soup thicker? ›

6 ways to thicken soup:
  1. Blend all or part of it. If you've made a broth with chunks of vegetable in it, such as minestrone soup, then pour the soup through a sieve. ...
  2. Add cream or yogurt. ...
  3. Add flour or cornflour. ...
  4. Use a butter and flour paste. ...
  5. Blend in bread. ...
  6. Add lentils or rice.

How do you thicken soup or sauce? ›

Add Flour Or Cornstarch

You can thicken soup by adding flour, cornstarch, or another starchy substitute. For the best results, never add flour or cornstarch directly to your soup. If you do, it will clump up on top. Instead, ladle a small amount of broth into a separate bowl and let it cool.

What can I use to thicken my vegetable sauce? ›

Ways To Thicken Sauce
  1. Tomato Paste. If your soup or stew is watery, adding tomato paste may help! ...
  2. Arrowroot. You might prefer to avoid gluten in your recipes. ...
  3. Flour. ...
  4. Reduce Your Liquid. ...
  5. Puréed Vegetables. ...
  6. Egg Yolk. ...
  7. Yogurt. ...
  8. Rice.
Jul 15, 2022

How to thicken vegetarian stew? ›

Mix one teaspoon cornflour with a tablespoon of room temperature water and add to your stew. Then bring to the boil and cook until desired thickness is reached. Cornflour is a great gluten-free thickener. It has a slightly more gelatinous texture, so only add a teaspoon at time or your sauce may become a bit goopy.

How do you fix watery vegetable soup? ›

Whisk in a bit of flour or starch.

Instead, whisk a small amount of soup into the starch or flour until it dissolves, then add the resulting mixture into the soup. This mixture is also known as a "slurry." After incorporating the slurry into the soup, let the liquid boil for a minute to thicken.

What is the best ingredient to thicken soup? ›

About this method: One of the most common ways to thicken sauces and soups is with a starch-based slurry, and cornstarch is a popular choice. Cornstarch is flavorless, easy to mix up, and versatile, which makes it a go-to pantry ingredient.

What are 5 methods of thickening a soup? ›

5 Ways to Thicken Soup to Achieve the Perfect Consistency
  • Roux. A roux (ROO) is a mixture of flour and fat—such as cooking oil, butter, or chicken fat—that is cooked, then used to thicken soup, sauce, or gravy. ...
  • Flour or Cornstarch. ...
  • Pureeing Ingredients. ...
  • Beurre Manié ...
  • Eggs.
Mar 16, 2022

What is the healthiest way to thicken soup? ›

One way to thicken a stew without flour is to add some cooked rice or quinoa. Another option is to puree some of the vegetables in the stew to thicken it. To thicken a stew without flour, some recipes call for using a thickener such as arrowroot starch or almond flour.

What are 2 ways to thicken sauce? ›

The most readily available sauce-thickener is flour. For a too-thin sauce, try adding a slurry (equal parts flour and water, whisked together) or beurre manie (equal parts softened butter and flour, kneaded together to form a paste)—both are ideal thickeners for rich and creamy sauces, such as steak sauce recipes.

What is the healthiest way to thicken a sauce? ›

Starchy vegetables—like potatoes, winter squash or celeriac—are excellent thickening agents, especially if they've been pureed. Simply roast or boil these vegetables and pop them into the food processor until smooth. Then, stir it into the sauce, and voila: It will instantly be thicker!

Is it better to thicken with flour or cornstarch? ›

It's important to note that cornstarch has twice the thickening power of flour. If you need to substitute cornstarch to thicken liquid in a recipe that calls for ¼ cup (four tablespoons) flour, you only need two tablespoons cornstarch.

What is the best thickening agent for stew? ›

The three main thickening agents for gravies are flour, cornflour and arrowroot. The first two are normally used in savoury dishes while arrowroot tends to be used in sweet dishes – that said, arrowroot will work in a savoury dish as it has no flavour.

How do you thicken stew without flour or cornstarch? ›

Pureed starchy vegetables. like potatoes or carrots. You simmer in the liquid until it's nice and soft, and then you blend with an immersion blender or blender. until it's very, very smooth and thickened.

How do you thicken stew without changing taste? ›

Cornstarch, or corn flour, can be used to thicken soup through its high starch content. Cornstarch is a great thickener for soup because only a little bit is needed to significantly thicken a soup, and it will not affect the flavor profile of the soup.

Is it better to thicken soup with flour or cornstarch? ›

It's important to note that cornstarch has twice the thickening power of flour. If you need to substitute cornstarch to thicken liquid in a recipe that calls for ¼ cup (four tablespoons) flour, you only need two tablespoons cornstarch.

Does soup get thicker the longer you cook it? ›

Many home cooks find themselves wondering how to thicken a soup, and there are a few different ways: cooking the soup longer to remove excess liquid, blending some of the solid ingredients of the soup, or using food scraps like bread or potatoes to thicken the soup, but if you don't have time to wait, you can use a ...

What can I use to thicken soup instead of cornstarch? ›

Here are five of the best cornstarch substitutes for all your thickening needs.
  • All-Purpose Flour. Yep, that's right — all-purpose flour is a very stable thickener. ...
  • Arrowroot Powder. ...
  • Potato Starch. ...
  • Rice Flour. ...
  • Tapioca Starch.
Jun 23, 2023

What can I add to soup to make it thinner? ›

Add more liquid: The simplest solution is to add more liquid, such as water, broth, or milk. Start by adding a small amount and gradually add more until you reach the desired consistency. Use a blender: If you have a blender, you can puree the soup in batches, adding more liquid as needed.

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