Raz Grape Ice Vape and the Engineering Behind Its Crisp Performance I have used a lot of ice-flavored disposables since I got into vaping tech, and one thing I have learned is that crisp performance depends far more on engineering than on the flavor name printed on the box. When I first tried the Raz Grape Ice Vape, the thing that stood out was how the grape stayed sweet and the menthol stayed sharp through thousands of puffs without fading or turning harsh....