To make oobleck, you'll need just a few simple ingredients: water, corn starch, and food coloring. In a large bowl, add a few drops of food coloring to a cup of water. Slowly stir in a cup and a half to two cups of corn starch until the mixture forms a gooey slime.

How do you make oobleck?

Mix 2 cups of cornstarch to 1 cup of water into a bowl. Mix the cornstarch and water until your oobleck is formed. Tip: If you would like to color your oobleck, add your food coloring to your water and then mix with the cornstarch.

Is it OK to eat oobleck?

Luckily, the gooey substance is not toxic, but it probably won't taste good since it's just cornstarch and water. As one individual pointed out on Yahoo Answers, while eating oobleck may not be poisonous, it could potentially give someone pains in their stomach if large quantities are ingested.