How Do I Thicken My Pot Roast Gravy?

Pot roast is a hearty and comforting meal that can warm up even the coldest of days. The rich and flavorful gravy that accompanies it is an essential part of the dish, bringing together all the classic flavors that we love. However, sometimes the gravy may be too thin or watery, leaving you with a less satisfying meal than you had hoped for.

In this article, we will explore some simple yet effective ways to thicken your pot roast gravy. Whether you prefer a traditional beef or vegetarian version, these tips will help you achieve that perfect consistency that will make your dinner even more enjoyable. So, let’s get started!

Key Takeaway
There are a few ways to thicken pot roast gravy. One option is to make a slurry by mixing equal parts of flour or cornstarch with cold water, and then stirring it gradually into the boiling gravy until it reaches the desired thickness. Another option is to puree some of the cooked vegetables in the gravy to thicken it naturally. You can also let the gravy simmer uncovered for some time to reduce and thicken on its own. Be sure to adjust the seasoning after thickening the gravy, as it may become more concentrated.

Understanding the Science of Thickening

Before we dive into how to thicken pot roast gravy, let’s first understand the science of thickening. Thickening agents work by absorbing and trapping the excess liquid in a dish, creating a thicker texture. There are various methods of thickening, but the most widely used are roux, arrowroot, cornstarch, and flour.

Roux is a mixture of equal parts flour and fat (usually butter) cooked over low heat until it forms a paste. It’s the base for many classic sauces and gravies and acts as a thickening agent. Arrowroot is a natural thickener that comes from the arrowroot plant’s root. It’s gluten-free and works at a lower temperature than cornstarch, making it an ideal choice for delicate sauces. Cornstarch is another popular thickener that dissolves easily and quickly, creating a smooth texture. Flour is also used to thicken gravies; however, it can create a lumpy texture if not added carefully.

The Best Thickening Agents for Pot Roast Gravy

When it comes to thickening pot roast gravy, there are several options available. One popular choice is using cornstarch. To use cornstarch as a thickening agent, mix equal parts cornstarch and cold water in a separate bowl, then add the mixture to the pot roast gravy while it’s still hot. Stir the gravy constantly until it thickens to the desired consistency.

Another good option for thickening pot roast gravy is using flour. Simply blend 2-3 tablespoons of flour with an equal amount of softened butter, and then whisk the mixture into the hot pot roast gravy. Allow the gravy to simmer for a few minutes, stirring constantly until it thickens. Be sure to taste the gravy and adjust the seasoning as per requirement, as the added flour and butter may affect the taste of the pot roast gravy. These are two simple yet effective ways to thicken your pot roast gravy without altering the flavor profile.

Tips for Using Flour to Thicken Gravy

Flour is a common thickening agent used in cooking, and it can be used to thicken pot roast gravy too. There are a few tips to keep in mind when using flour to thicken gravy.

Firstly, it is essential to cook the flour properly to avoid a raw taste in the gravy. This can be achieved by making a roux, which is a mixture of equal parts flour and fat cooked together until it is evenly browned. Be sure to cook the roux over low heat to prevent burning. Secondly, the amount of flour used should be measured correctly to avoid making the gravy too thick or too thin. Generally, one to two tablespoons of flour per cup of liquid is recommended for a moderate thickness. However, this may vary depending on the quantity of the liquid and how thick you want the gravy to be. With these tips, you can use flour to thicken your pot roast gravy to your desired consistency.

Making a Slurry: A Foolproof Way to Thicken Gravy

Making a slurry is one of the easiest and most foolproof ways to thicken your pot roast gravy. To make a slurry, you’ll need cornstarch or flour, and water. Simply mix equal parts of cornstarch or flour with cold water in a small bowl, and whisk it together until smooth.

Once the slurry is prepared, add it to your pot roast gravy slowly, while stirring constantly. As you add the slurry, the gravy will start to thicken. Continue to stir until your desired consistency is achieved. Keep in mind that it can take a few minutes for the gravy to fully thicken, so be patient and don’t add too much slurry too quickly. Making a slurry is a quick and easy way to thicken your pot roast gravy without any lumps or clumps.

How to Thicken Gravy with Cornstarch

Cornstarch is a perfect ingredient for thickening gravy as it is gluten-free and adds a velvety texture to the gravy. To thicken the pot roast gravy with cornstarch, take a small bowl and mix 2-3 tablespoons of cornstarch with an equal amount of cold water. Whisk them together until the mixture is smooth and there are no lumps.

Once the mixture is ready, add it to the simmering pot roast gravy and stir continuously. Ensure that the pot is on medium-low heat and be careful not to add too much cornstarch as it can make the gravy too thick and starchy. Keep stirring until the gravy reaches the desired consistency. If the gravy still feels too thin, repeat the process of adding cornstarch mixed with cold water until you get the consistency you desire. Cornstarch thickens the gravy quickly, so adding it in small amounts is always recommended.

The Do’s and Don’ts of Using Roux as a Thickening Agent

Using roux as a thickening agent for pot roast gravy is a great choice when you want to add some thickness and richness to your gravy. But to ensure that you get the best results, there are some do’s and don’ts that you must follow.

The first do is to make sure that your roux is cooked properly. The flour and fat in the roux should be cooked until they form a golden brown paste, which will add a nutty flavor to your gravy. The next do is to add the roux to your pot roast gravy slowly and in small amounts. This will ensure that the roux is evenly distributed and doesn’t clump up. On the other hand, one of the don’ts is not to let your roux burn, which will create a burnt taste in your gravy. Additionally, don’t add the roux all at once as this may cause your gravy to thicken too quickly, making it difficult to adjust the consistency. By following these do’s and don’ts, you can create a delicious pot roast gravy that’s thick, rich, and flavorful.

Surefire Ways to Fix Thin Gravy

There’s nothing more disappointing than serving thin, watery gravy with your pot roast. But fear not, because there are a few tried-and-true ways to fix it. The first option is to use a cornstarch slurry. Simply mix equal parts cornstarch and cold water, then whisk it into your simmering gravy. This will help it thicken up in a matter of minutes.

Another option is to make a roux. This involves cooking equal parts flour and fat (such as butter or bacon grease) in a pan until the mixture turns golden brown. Once your roux is ready, whisk it into your pot roast gravy and let it simmer until it reaches your desired thickness. These two methods are the most reliable ways to thicken your pot roast gravy, so give them a try if you’re dealing with a thin, lackluster sauce.


In conclusion, thickening your pot roast gravy is a simple process that can be achieved using various methods. Whether you prefer a flour-based roux or cornstarch as your thickening agent, the key is to add it slowly while continuously stirring to avoid any lumps or clumps. Be sure to also adjust the seasoning and consistency of the gravy to your taste before serving.

It is important to remember that gravy is a personal preference, and some people may prefer it to be thicker or thinner than others. Therefore, experiment with different methods and ingredients until you find the perfect consistency for your pot roast gravy. By following these tips, you can create a delicious and flavorful gravy to complement your pot roast and make it an unforgettable meal.

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