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How to thicken soup with gluten-free ingredients

Lana Bandoim's picture
Gluten Free soup ingredients

If you need to thicken soups but must use gluten-free ingredients because of celiac disease or gluten intolerance, then the following tips will help. You can make delicious soups that are thick and creamy on the gluten-free diet.


Whether you are making your favorite soup or trying a new recipe, you may need to thicken it. However, if you are on the gluten-free diet, then you know you cannot reach for the regular flour. Instead, you may want to try the following gluten-free ingredients that are safe for celiac disease.

How to thicken soup with easy GF ingredients

One of the frequent complaints from people on the gluten-free (GF) diet is that they want their food to look and taste normal. When you are cooking soup, you often need a thickener that will enhance the ingredients without affecting the taste in a negative way. These gluten-free thickeners will help you accomplish this.

1. Add corn starch

Corn starch, which you may also see as cornstarch or maize starch, can help you thicken soups. Argo Corn Starch, Clabber Girl Corn Starch, Rumford Corn Starch, Hearth Club Corn Starch and Bob's Red Mill Corn Starch are gluten-free and safe for celiac disease. It is important to use corn starch that is gluten-free, so it does not violate your GF diet.

2. Add arrowroot

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Arrowroot is a good option for thickening soups because it does not have a strong flavor that affects the other ingredients. In addition, this starch is known for holding well if you freeze and thaw it. This means that you can make extra batches of soup and freeze them without worrying about separation or flavor issues.

3. Add potato starch

Potato starch is another popular soup thickener. It also does not affect the taste of the soup or broth, so you can add it to almost any recipe. Potato starch easily absorbs moisture and a small amount can quickly thicken your soup. It is important to remember that potato flour may not work as well as potato starch since it can be affected by boiling.

4. Add kudzu powder

Kudzu powder is often used to make teas, but it can also help you thicken soups. Many cooks compare it to arrowroot for its consistency and thickening abilities. Although it is harder to find in stores than the other gluten-free ingredients, there are health benefits to using kudzu. It has been a popular traditional Asian medicine and may help improve digestion, fight diabetes and reduce the risk of cancer.

More tips for how to thicken soup with gluten-free ingredients

Corn starch, arrowroot, potato starch and kudzu powder can thicken soups and help you stick to the gluten-free diet. However, they are not the only GF options. You may also want to experiment with GF rice flour as a soup thickener. Other cooks have found success with tapioca, instant mashed potato flakes, corn flour and creamed beans. The key is to find a thickener that works for your soup recipe and enhances or does not affect the flavor.