Despite their popularity of being served in glassware that resembles pint beer glasses, there are soda glasses that specifically promote the perfect glass of cola or diet soda. While any glass can serve as a vessel for soft drinks, these glasses are specially constructed to retain the carbonation as you fill the glass of soda.
These very specific-designed pieces of glassware have a narrow bottom that tapers out into a wider rim. This way, when you pour the soda, it will roll gently down the side of the glass, instead of falling all the way to the bottom, which can cause a build-up of fizz. When this build up occurs in standard beverage glassware, the glass often times looks like it was not filled all the way because the fizz quickly dissipates.
To properly pour soda, it is necessary to tilt the soda glass so that it is at a 60 degree angle relative to the table or the soda fountain tab. Pour bottled soft drinks slowly so that the soft drink touches the side of the glass instead of hitting the bottom. This will prevent the liquid from building up momentum and speed, which will cause fizzing once it hits a surface. As the glass fills, you will need to slowly bring it back to an upright position to prevent the soda from spilling. Add the ice at the end one-by-one, and you have a perfect glass of soda that still has most of its carbonation.
In addition to soda, many of these soda glasses are perfect for serving milkshakes and malts because of their tall bowls and short stems. This makes the milkshake look bigger to your customers than it would look in a standard glass.