Video: Discover the secret to walking on water If you have ever tried to walk on water and failed, you were missing a vital ingredient: corn starch. An event in Kuala Lumpur saw dozens of people making their way across a pool filled with the mix, which changes its viscosity depending on the pressure applied to it. The fluid, also known as Ooblek after the Dr Seuss book about a magical gooey green substance, is similar in composition to quicksand; if sharp pressure is applied to it the substance hardens, but when subjected to gentle pressure it flows much like water. Participants competed to cross the fluid in the most imaginative ways possible, with one person even trying on a bike. The event was organised by the Malaysian Hong Leong Bank How to make your own Ooblek: