If you like honey on your toast at breakfast, you are ready to perform one of the simplest and most beautiful experiments in the physics of fluids. Plunge a spoon into the honey jar, take it out and then hold it vertically, several centimeters above the toast. The thin stream of falling honey does not approach the toast directly but instead builds up a whirling helical structure. In the late 1950s the resemblance to a pile of coiled rope led the first investigators of this phenomenon, George Barnes and Richard Woodcock, to call it the liquid rope-coil effect.