Decanter of Death by Mark Strivings - Trick

What is the Decanter of Death?It is pictured here. It doesn't look like much, but lurking within this innocent-looking little glass are the makings of a sinister and highly commercial presentation.Here's what happens.The performer displays three small glasses (as pictured), three small handkerchiefs, three slips of paper and pencils, and three rubber bands. Three volunteers are selected to assist. Two of them are told to write the same of a tasty beverage on their respective slips of paper. The third helper is instructed to write the name of a liquid that, should it be ingested, would be fatal. All of these helpers can write anything they wish, within these guidelines. All three slips are folded up and placed, one each into the three glasses. These glasses are then covered with the handkerchiefs and the contents sealed in place with the rubber bands around the mouth of the glass.The glasses are mixed freely while the performer turns away. The performer then takes the wrist of the helpe