While some winemaking techniques once considered fraudulent are now generally accepted, a few practices have gone in the opposite direction. One of the most controversial is adding water to wine in a technique known today as humidification. Master of wine Jancis Robinson calls the act of adding water to "stretch out" or dilute wine "possibly the oldest form of wine fraud in the book." There is a long history of adding water to dilute wine in order to make it more palatable. The ancient Greeks thought it was "barbaric" to drink undiluted wine. They further believed that undiluted wine was unhealthy and that the Spartan king Cleomenes I was once driven insane after drinking wine that was not diluted with water. Today, few consumers dilute their wine as the Greeks did, but the use of water during the winemaking process is still prevalent.