You put this powder into a glass of water and it turns it into a liquid that looks like beer. It looks like real beer but it tastes disgusting! It will not do the person who drinks it any harm except make them wish they hadn't fallen for your prank. Great for Bars and other places where people may be intoxicated, they won't understand what has happened to their drink! Great to use on friends, family and people you work with. Comes with Instructions.