What glass should I use for different cocktails?

The answer

Three shapes cover most needs: a rocks glass for drinks over ice, a coupe or stemmed cocktail glass for drinks served up, and a highball or Collins glass for tall drinks. Rocks glasses suit an old fashioned or a negroni, stems keep your hand from warming a drink served up, and tall glasses suit soda or ginger beer. A flute suits sparkling cocktails. Chill the glass first, since a cold glass keeps your drink at its best for longer.