Here’s everything to know when comparing the two. On paper, the rocks and the Old Fashioned glass serve similar purposes.

Do we want this cocktail to continue diluting and changing as the drinker imbibes? If so, smaller formats of ice are used.” A mojito complete with tiny ice cubes might pair well with a narrow highball ...

The old-fashioned is one of the oldest mixed drinks in the cocktail canon. Muddle a sugar cube and bitters with one bar spoon of water at the bottom of a chilled rocks glass. (If using simple ...