making oobleck


What is Oobleck and How Do You Make It?

Move over slime! The hottest trend now among kids is making oobleck. What is oobleck?

It’s an odd name isn’t it? When my 10-year-old son told me he wanted to make oobleck, I was baffled – I hadn’t heard of this name before.

What is Oobleck?

Oobleck is a non-Newtonian fluid; it has properties of both liquids and solids. Oobleck is neither a liquid or a solid. The cornstarch-and-water mixture creates a fluid that acts more like quicksand than water. When you apply force, like squeezing or tapping the oobleck, it will become thicker.

How do you make oobleck?

  1. Place 1 cup of cornstarch in a large bowl.
  2. Stir about 1/3 cup of water to the cornstarch, adding a little more if needed (to about ½ cup)
  3. Add 4-5 drops of food coloring to 1/2 cup of water if you want a colour
  4. Keep stirring with your hands until it has a gooey consistency
  5. Test the oobleck by grabbing a handful and trying to form a ball.


Why do kids like oobleck?

It makes a great science project or is just fun to play with. You can slowly dip your hand into it like a liquid, but if you squeeze the oobleck or punch it, it will feel solid.

Kids will have a ton of fun playing with oobleck. Make sure to lay out some newspaper or wax paper on a table before starting – the corn starch will get everywhere!