Today we are making a super easy Gak recipe, aka gack slime. This fun homemade slime recipe with only 2 ingredients is great for kids of all ages. Homemade Gak is a fun alternative to slime — it’s thicker, squishier, and makes fun sounds when you press down into it.

Two-Ingredient Gak recipe - green gak shown stretched along a white background with child's hands - Kids Activities Blog
Let’s learn how to make Gak!

How to Make Gak Slime

If you were around in the 90s, you probably had Gak as a toy or watched the Gak attacks on Nickelodeon which included a green slime substance being dumped most likely on someone’s head.

Related: Best homemade slime recipes and Best Goop, Oobleck, Gak, Silly Putty, & Slime Recipes You Can Make

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Two-Ingredient Gak Recipe

Our Gak is a variation on a homemade slime recipe that is fun and easy to make and only requires a few ingredients.

Supplies Needed to Make Gak

Directions to Make Gak

Step 1

Add the glue to a bowl. If you want to color the gak, add a few drops of food coloring and mix it into the glue.

Step 2

Slowly stir in the liquid starch, adding 1/4 cup at a time.

Step 2- Two-Ingredient Gak Recipe- Hands stretching green gak recipe- kids activities blog
Slowly stir in the liquid starch 1/4 cup at a time.

Step 3

You’ll need to use your hands to incorporate the liquid starch into the glue. It’s kind of like kneading bread — just keep working it until it’s fully incorporated.

Step 3- Two-Ingredient Gak Recipe- Hand squishing and poking the gak slime- kids activities blog
Knead the 2 gak slime kind of like bread.

Step 4

Let it sit for a few minutes and it will acquire a smooth consistency.

Step 4- Two-Ingredient Gak- hand stretching gak slime green on white background- kids activities blog
Let your gak slime sit for a few minutes to let it become smooth.

Gak Slime Recipe Notes:

Don’t like green? That’s okay! You can make different colors by using different food coloring. You can have a colorful variety of gak.

Finished Gak Slime

Then, it’s ready for play!

Slime oozes, but gak is sticky, and these simple recipes which makes this a great sensory experience and activity and also great gift ideas. This Gak is some serious fun!

The best part is you don’t need boric acid, sodium borate, for these slime mixtures. DIY slime has never been easier. Though you may want adult supervision when making this 2 ingredient gak slime.

How To Store Your Gak Slime?

You know what this Gak slime makes me think of? Nickelodeon gak…regardless after making it we don’t want it to dry out. So keep it in a sealed container. Want to keep the gak moist so you can have hours of laugh-out-loud entertainment.

Finished Two-Ingredient Gak Recipe- being crushed between two hands on white background- kids activities blog
This 2 ingredient gak slime recipe makes a perfect sensory activity.

We had a lot of fun stretching out the gak.

It’s really cool how it will melt back down into itself if you let it sit long enough.

Yield: 1

Easy Gak Slime Recipe

Two-Ingredient Gak

Follow these easy steps to make your own Gak slime recipe at home. Gak is a slime that is thicker and squishier than slime and has some funny sounds it makes when you play with it. Inspired by the original GAK from the 1990s, this two ingredient slime recipe is fun for all ages.

Prep Time 5 minutes
Active Time 5 minutes
Total Time 10 minutes
Difficulty Medium
Estimated Cost $5


  • 1 bottle clear school glue
  • 3/4 cup liquid starch
  • Optional: food coloring


  • bowl
  • something to stir with


  1. In a small or medium bowl, add the glue.
  2. If you are going to color your Gak (we made traditional green slime) then add your food coloring to the glue and mix.
  3. Slowly stir in the liquid starch 1/4 cup at a time.
  4. Knead the mixture until everything is fully combined.
  5. Let rest a few minutes.

More Slime Recipes From Kids Activities Blog

Love this 2 ingredient gak slime? Then try making this colorful snow cone slime.
Love this 2 ingredient gak slime? Then try making this colorful snow cone slime.

We hope you love this homemade gak recipe for kids! Leave us a comment and tell us your kid’s favorite slime recipe!

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