Synthehol is a synthetic variant of alcohol that has no intoxicating and addictive properties. Synthehol was invented by the Ferengi. Ferengi merchants would use it in social settings in which they would serve drinks with actual alcohol to customers while they consume synthehol. Soon the hapless victim would be totally drunk and making all sorts of deals with a Ferengi merchant who was still quite sober. Eventually the secret of synthehol was made public. At first irritated over the loss of their secret, the Ferengi got over their irritation when straight sales of synthehol turned out to be quite sizable.