How to Make Oobleck without Cornstarch

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How to Make Oobleck without Cornstarch with Messy Learning Kids

Attention all those who are looking for a fun and interactive activity for the kids! Have you ever heard of oobleck?

It’s a fascinating substance that kids love to play with. We wrote about different variations of thickening agents, and also collected a range of fun and educational activities for kids. 

Learn more about what is oobleck and how to make cornstarch oobleck (the classic recipe), or keep reading to discover alternative thickening agents and a step-by-step guide on how to make oobleck without cornstarch.

Get ready for some messy and memorable fun!

ooblec in action

How to Choose the Best Thickening Agent for Your Needs?

Choosing the best oobleck thickening agent depends on the desired consistency and the materials available.

Consider the type of thickening agent, its ability to create the desired texture, and any potential safety concerns or allergies before making a decision.

Alternative Thickening Agents

Oobleck is a type of non-Newtonian fluid made by mixing cornstarch and water in a specific ratio, but there are other alternatives that offer similar thickening capabilities without relying on starch-based ingredients.

  • Arrowroot powder is a natural thickening agent made from the root of the arrowroot plant. It has the advantage of being gluten-free and has a neutral taste, but can be more expensive compared to other thickening agents.
  • Potato starch is extracted from potatoes and commonly used in cooking and as a thickening agent, including in oobleck. The advantages of using potato starch in oobleck are its ability to absorb water and create a gooey consistency, however, it tends to clump.
  • Tapioca Powder, also known as tapioca starch, is a popular thickening agent made from the cassava root. It is an excellent gluten-free alternative to cornstarch and has a neutral flavor, making it ideal for use in a variety of recipes, including oobleck. However, it can become slimy if not used in the right proportions, and it may not provide the same level of viscosity as cornstarch.
  • Baby Powder can be a goo alternative in a case, you run out of cornstarch but have cornstarch baby powder at home, you can prepare this version of oobleck and the whole room will smell like babies. It is important to note that only cornstarch-based baby powder will work to make oobleck. Talcum powder will not have the same thickening properties. Additionally, using baby powder to make oobleck can result in a strong, intense scent that may not be appealing to everyone.

Oobleck Ingredients without Cornstarch

ingredients to make oobleck

How to Make Non Newtonian Fluid with Alternative Thickening Agents

Choose a thickening agent. 

Prepare the ingredients by measuring 1 part water and 2 parts thickening agent of your choice into a mixing bowl.

Mix the water and thickening agent together using a spoon until fully blended.

Keep stirring the mixture until it reaches a gooy texture. The duration required for the mixture to thicken may vary depending on the type of thickening agent in use.

Check the consistency of the oobleck by pressing a small amount between your fingers. If it feels solid when you squeeze it and then runs through your fingers like liquid when you let go, then you have successfully made oobleck.

Store the oobleck in an airtight container when you’re finished playing with it. If it starts to dry out, simply add a small amount of water and stir to bring it back to its original consistency.

messy play with oobleck

Tips for Achieving the Right Consistency

To achieve the right consistency for oobleck, gradually add more thickening agent powder if the mixture is too watery, and add more water if it’s too thick, one teaspoon at a time. Continuously stir the mixture until the desired consistency is achieved.

If the oobleck is too runny, add a small amount of your thickening agent and continue to stir until you reach the desired consistency. If it is too thick, add a small amount of water and continue to stir until the oobleck reaches the desired consistency.

how do you make oobleck without cornstarch

Using the Oobleck

Hands-on, sensory-based activities, like making oobleck, provide children with opportunities to explore and learn about the world in a fun and engaging way.

These activities help to develop their fine motor skills, problem-solving abilities, and creativity. Additionally, the process of making oobleck is a great way to spark their curiosity and interest in science. 

Sensory Play Activities

Playing with oobleck offers fun, engaging sensory play with numerous benefits. Its unique texture and consistency stimulate touch and promote sensory development, improve fine motor skills, and provide a relaxing and imaginative play experience.

Encourage children to touch, squish, and manipulate oobleck with tools and added colors and scents. Let imaginations run wild while having fun! 

We’ve got some amazing oobleck activities for you to try. Here are a few examples to get you started:

Rainbow Oobleck

Rainbow oobleck is a fun and colorful variation of the oobleck recipe without cornstarch. Divide the oobleck mixture into smaller bowls and add a different food coloring to each one, creating your desired rainbow of colors.

Mix well to ensure that the food coloring is fully incorporated. Once all of your colors are ready, layer them on top of each other in a clear container, creating a beautiful rainbow effect. We also added a few colorful dinosaurs.

The result is a fun, sensory activity that’s perfect for kids of all ages!

diy oobleck of rainbow colours
how to make oobleck without food coloring
what to do with cornstarch oobleck
making non newtonian fluid but this time rainbow one

St. Patrik’s Coin Hunt

Celebrating St. Patrick’s Day is an ideal occasion to incorporate engaging and sensory-based experiences into the festivities. One such activity is a coin hunt using green oobleck. Prepare a green oobleck as learned previously.

Hide coins within the oobleck and challenge kids to find as many as they can use their senses.

non newtonian cornstarch

This activity not only adds an element of excitement but also helps to develop fine motor skills and hand-eye coordination.

how to make slime less watery
Oobleck slime

Easter Oobleck

Easter Oobleck is a fun and sensory-filled activity that’s perfect for the spring season. This activity takes the non newtonian fluid recipe and adds a festive twist with a green oobleck base that resembles grass.

The green oobleck grass is filled with toy carrots and flowers, plastic eggs, scoops, and spoons, making it the perfect activity for an Easter celebration. Kids will love using their hands to dig through the gooey, squishy oobleck and play with Easter toys. 

cornstarch goo for Easter kids activty
cornstarch solid liquid for Easter sensory play

Earth Day Oobleck

Earth Day Oobleck is a fun and educational sensory activity for children to learn about the environment on Earth Day.

To create this activity, mix green and blue oobleck in a bin or container.

The green and blue colors represent the land and sea on Earth. Kids can then play with the oobleck, observing its unique properties and exploring how the colors mix and blend together.

This activity can be a great opportunity to start conversations about environmental issues and the importance of protecting our planet.

non newtonian fluid cornstarch for Earth Day activty
liquid starch substitute for Earth Day sensory activity

STEM Activity

The speaker oobleck activity teaches kids about the science of sound and its relationship with vibration through a hands-on experience.

A portable speaker covered in plastic wrap (cling film), and oobleck are used to create a sensory experience where sound waves produce movement in the mixture.

This activity encourages kids to experiment and explore different types of audio to see how it affects the mixture, making it an interactive and educational way to learn about STEM.

onnleck with cornstarch experiment
Oobleck experiment – Photo by Rory MacLeod


Is Oobleck a Solid or a Liquid Substance?

Oobleck is a non-Newtonian fluid, meaning it has properties of both liquids and solids. When subjected to a steady force, it acts like a liquid, but when subjected to a sudden impact, it acts like a solid.

This makes Oobleck an interesting and unique material for sensory play and exploration.

How to Make Oobleck with Flour?

While flour may seem like a good thickening agent, you cannot make oobleck with them as it does not have the same thickening properties as cornstarch, the traditional thickening agent used to make oobleck.

Can I Save Hard Oobleck? How do I store oobleck?

It’s important to note that oobleck may lose its viscosity over time, so it’s recommended to use it within a few days of storage.

Hard oobleck can be stored in an airtight container in the refrigerator. It can be reused by adding a small amount of water to soften it and to help rehydrate the mixture.

Another thing to keep in mind is to avoid clogging pipes, it’s recommended to dispose of oobleck in the trash or let it dry out completely before throwing it away.

Is Oobleck Edible?

Oobleck is not toxic, but it is not recommended to eat it as it is not designed for consumption and may not taste good.

How to paint Oobleck?

To paint oobleck, you can add a few drops of food coloring or tempera paint to the mixture while making it. This will result in a colorful and visually appealing oobleck that is perfect for sensory exploration and play.

Another way to paint oobleck is to use a paintbrush to apply paint onto the surface of the oobleck after it has been made. This can create interesting textures and designs as the paint interacts with the oobleck’s unique properties.

cornstarch and water mixture with food coloring as classic oobleck


Oobleck is a fun and educational substance that kids love to play with. It’s a non-Newtonian fluid made by mixing water and a thickening agent in a specific ratio. Cornstarch is a classic thickening agent, but there are several alternatives that offer similar results such as arrowroot powder, potato starch, tapioca powder, and even baby powder. 

To make oobleck, mix 1 part water with 2 parts thickening agent, stir until fully blended, and reach a gooey texture. To achieve the right consistency, gradually add more thickening agents or water as needed. 

Finally, playing with oobleck offers sensory play activities that stimulate touch and promote sensory development, improve fine motor skills, and provide a relaxing and imaginative play experience.

How do You make oobleck? Let us know in the comment below. 🙂

Get those hands dirty and enhance your learning experience with more hands-on, sensory-based activities found on Messy Learning Kids. Join the fun and discover new ways to learn and grow!

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Eniko is a mother and wife, ex-teacher, and world traveler. Loves to be creative and admires spending quality time with her family. Enjoys outdoor activities-, and connecting to nature. She loves sharing her enthusiasm and inspiration. For more details check out Messy Learning Kids.

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