The principle at work is fairly simple, even if the engineering behind it is somewhat mystifying to the lay observer. Drugs like Rohypnol, GHB and Ketamine can go unnoticed if dropped in your drink, but not if a built-in warning system alerts you not to take another sip. The presence of such compounds in a cocktail will make a DrinkSavvy's 16-oz. plastic cup unmistakably change color.
Sobe Pina Colada
Gatorade Fruit Punch
G2 Gatorade Blueberry-Pomegranate
1 Part Whipped Cream Vodka
Start by filling glasses to the brim with ice then pour the drink with the highest sugar content into the cups (Sobe Pina Colada) and fill them approximately one third full. For the second layer pour the second drink with the lower sugar content slowly (Gatorade Fruit Punch) through the ice to fill approximately the second third of the glasses. Finish with the sugar-free drink (G2 Gatorade Blueberry-Pomegranate) and top each glass with vodka. The vodka will sit on top of the creation. Be careful, this drink can be very strong!