Learn how to make oobleck with this simple recipe of cornstarch and water! Oobleck is SO FUN to play with and it's a great science experiment for kids involving non-Newtonian fluids and viscosity. Oobleck Recipe Have you ever heard of oobleck?! This substance gets its name from a Dr. Seuss book, Bartholomew and the Oobleck. In the book, Bartholomew has to rescue his kingdom from a sticky green substance that falls from the sky. You can make oobleck with only 2 pantry ingredients: water and cornstarch (aka cornflour). It's a simple science experiment that's somewhat similar to slime, but it's