How to Thicken Fruit Juice With Cornstarch

Are you looking for a quick, easy way to thicken your fruit juice? Whether you are making smoothies, cocktails, or even straight-up juice, cornstarch can be an excellent thickening agent that adds texture.

If you’re looking for a way to make fresh fruit juice more filling and nutritious, then adding a little cornstarch could be the perfect solution. Not only will it help thicken the juice, but it can also bring out its natural flavor. In this blog post, we’ll take an in-depth look at how cornstarch is used to thicken fruit juices and some of its other creative uses.

How to Thicken Fruit Juice With Cornstarch

By reading through our guide on how to thicken fruit juice with cornstarch, you’ll get all the tips and tricks necessary to make your favorite drinks even tastier! So grab your blender, and let’s start thickening up that fruit juice with cornstarch!

Summary: If you enjoy a good glass of fruit juice but find that it’s too watery, you can easily thicken it with cornstarch. Cornstarch is a natural thickening agent that can help bring body and texture to your juice. To thicken fruit juice with cornstarch, you’ll need to mix cornstarch with cold water, then add it to your juice and whisk it together. The cornstarch and juice mixture will need to be heated up until it thickens, constantly stirring to prevent any lumps from forming.

What Will You Need?

The great thing about thickening fruit juice with cornstarch is that you probably already have all the necessary ingredients in your kitchen. Here’s what you’ll need:

  1. A blender
  2. Two tablespoons of cornstarch
  3. Your favorite type of fruit juice

Once you have all your ingredients together, you’re ready to begin!

10 Easy Steps on How to Thicken Fruit Juice With Cornstarch

Step 1. Wash the Fruits:

Wash and prepare the fruits you will be using for your juice. Make sure to remove any stems, leaves, or other inedible parts. Be careful not to bruise the fruit, as this can produce a bitter flavor.

Wash and Prepare the Fruits

Step 2: Blend It Up:

Place the washed fruits in your blender and blend them until you have a smooth liquid. You may need to add some water if it is too thick. Don’t forget to remove any seeds or pits.

Step 3: Add Cornstarch:

Mix two tablespoons of cornstarch in a small bowl with four tablespoons of cold water. This helps dissolve the cornstarch so that there will be no lumps when added to the juice. Ensure that the mixture is fully combined with no lumps before adding it to the juice.

Step 4: Thicken It Up:

Once the cornstarch is fully dissolved, slowly add it to the fruit juice while stirring. Keep stirring until you achieve the desired thickness. Depending on how thick or runny your juice is, this can take anywhere from a few seconds to a few minutes.

Step 5: Refrigerate:

Once the desired thickness has been achieved, transfer the juice into an airtight container and place it in the refrigerator to cool down. This helps the cornstarch set and will make for an even thicker drink! If you plan on consuming the juice within a few days, then there is no need to freeze it.

Step 6: Use a Strainer:

If you want to eliminate any lumps or chunks that may have formed due to the cornstarch, then it is a good idea to strain the juice before serving. This can easily be done with a fine mesh strainer. Additionally, you can use a cheesecloth or paper towel if you don’t have a strainer.

Step 7: Add Sweetener:

If you want to give your juice an extra hint of sweetness, then feel free to add a tablespoon or two of sweeteners such as honey, maple syrup, or agave nectar. Another great way to sweeten up your juice is by adding a few drops of natural fruit extracts such as strawberry or raspberry.

Step 8: Serve:

Once you are happy with your juice’s thickness, feel free to serve it with any desired toppings or garnishes. If you use the juice for cocktails, you can consider adding additional ingredients, such as fresh herbs or citrus fruits, for added flavor. Ensure that the juice is properly chilled before serving.

Step 9: Store:

Any leftover juice can be stored in an airtight container for up to 3-4 days if kept refrigerated. It is important to note that since the cornstarch has been added, the juice will thicken even more once it reaches room temperature again. So make sure to consume it immediately or chill it back down before consuming.

Enjoy Your Favorite Beverages

Step 10: Enjoy!

Now you can enjoy your favorite beverages in a much thicker and tastier form thanks to this simple process. Remember, how you use your thickened fruit juices is only limited by your imagination, so get creative and enjoy your new creations! Enjoy your fruit juice!

Following these simple steps, you can easily thicken your favorite fruit juices using cornstarch. Not only is this method quick and easy, but it also adds an extra level of creaminess to the drink that you’ll definitely appreciate. So don’t hesitate any longer – get blending and start enjoying thicker fruit juices today!

5 Additional Tips and Tricks

  1. Measure how much cornstarch you need to thicken the juice accordingly. One teaspoon of cornstarch is usually enough for 1 cup of liquid.
  2. If possible, let the juice stand for a few minutes before adding the cornstarch, which will help dissolve it better.
  3. Make sure to mix the starch into a small amount of cold water first before adding it to the hot juice. This will prevent clumps and ensure a smooth texture.
  4. Stir constantly while adding in the cornstarch mixture to distribute evenly throughout the fruit juice.
  5. After thickening your fruit juice with cornstarch, be sure to store it in an airtight container and consume it within two days for the best taste.

Thickening your favorite fruit juice with cornstarch is a great way to add texture and flavor to an otherwise thin liquid. With these five tips, you can enjoy rich, creamy juices in no time!

Mix the Starch Into a Small Amount of Cold Water

5 Things You Should Avoid

  1. Do not add too much cornstarch. It is important to use the right amount of cornstarch when thickening fruit juice, as adding too much can cause it to become clumpy and unappealing.
  2. Do not boil the mixture for a long period of time. Boiling the mixture for an extended period of time could result in a burned flavor and texture, which will ruin the taste of your juice.
  3. Do not add frozen fruits or juices directly into the boiling mixture. Frozen fruits and juices should be added after taking off heat as this can cause them to break down, resulting in a liquidy texture instead of thickened one.
  4. Do not forget to stir constantly while heating up your mixture – this prevents the juice from burning.
  5. Do not leave the cooked mixture unattended, and make sure to keep it on low heat for as short a time as possible – this will ensure that your fruit juice is thickened evenly and does not become overly viscous or lumpy.

Following these tips will help you achieve the perfect consistency of your fruit juice every time! With patience and careful attention, you’ll be able to produce a delicious drink for all to enjoy. Happy Thickening!

Does Cornstarch Thicken When Hot or Cold?

Cornstarch thickens when heated. It starts to thicken when the mixture is brought to a boil and then continues to thicken as it cools down. For this reason, it is important that you add the cornstarch mixture while the juice is still at boiling temperature and mix well until it reaches your desired consistency.

Remember, how quickly or slowly it thickens depends on how much cornstarch was originally added – adding too much will result in an overly thickened texture. So take your time and use caution when adding and stirring the starch mixture!

With these tips in mind, you’ll be able to thicken any of your favorite fruit juices with cornstarch easily! Enjoy the creamy, delicious results.

Where Should You Avoid Adding Cornstarch?

Cornstarch should not be added to boiling soup or stew, as it can cause the starch granules to break down and create a slimy texture.

Additionally, cornstarch should also not be used in acidic foods such as citrus juices or tomato-based recipes, as this could affect how well it thickens.

Moreover, when thickening with cornstarch, it is important to take the temperature into consideration. If your mixture is too hot, the starch will break down and not be able to thicken properly.

When in doubt, always add a small amount of cold water or juice to your boiling mixture before stirring in the cornstarch – this will help ensure that the texture of your finished product is as desired!

Considering these considerations, you can easily thicken any fruit juice with cornstarch for a delicious treat! Enjoy!

Juicy Flavor to Your Own
Homemade Fruit Juice


With these tips, you can easily add a rich and juicy flavor to your own homemade fruit juice. By understanding the right proportions of cornstarch and juice, now you can quickly thicken your fruit juice just like a pro. Plus, if you don’t have cornstarch on hand, there are plenty of alternatives to thicken your drink, such as arrowroot powder or agar-agar flakes.

Finally, when it comes to making the perfect thick and sweet fruit juice, use your creativity. Experiment with different fruits and juices and see what you come up with! There’s no wrong way to make a delicious glass of sweetened goodness. Who knows – Maybe you’ll create the next best fruity concoction to share with all your friends.

Hopefully, the article on how to thicken fruit juice with cornstarch has been of help, and you now have the knowledge to make your own delicious creations. Enjoy!

Photo of author

Pamela Ackley

Hi, I am Pamela and the FOUNDER & EDITOR of I am a juice fanatic and fitness enthusiast who loves sharing my experiences with juicers and blenders with others. I love to juice and blend my favorite fruits and vegetables, and I'm the one behind this site writing everything about juicers and blenders. My passion for juicing started at a young age when I worked with my mom in her kitchen. Today, I continue to pursue my passion by sharing everything I know about juicers and blenders with you all!