Take a blob and roll it between your hands to make a ball. Then stop rolling. The Ooze will trickle away between your fingers. Put a small plastic toy on the surface. Ketchup, like Ooze, is a non-Newtonian fluid.
Physicists say that the best way to get ketchup to flow is to turn the bottle over and be patient.
Your Ooze is made up of tiny, solid particles of cornstarch suspended in water. Chemists call this type of mixture a colloid . As you found out when you experimented with your Ooze, this colloid behaves strangely. When you bang on it with a spoon or quickly squeeze a handful of Ooze, it freezes in place, acting like a solid. The harder you push, the thicker the Ooze becomes.