Atlanta has soft drinks for retail sale. Carbonated drinks that come in various colors, flavorings and tastes are known as soft drinks (as opposed to "hard drinks", which have alcohol in them). These drinks are sweet due to added sugar, and the fizz is from the dissolved carbon dioxide, this dissolution is done under pressure and is released when the seal of the bottle or can is broken. They are manufactured by a number of companies such as PepsiCo and Coca Cola, and are a popular addition to fast food. They are available from vending machines, cans, bottles of various capacities. They are served at many establishments in Atlanta, and can also be bought from retail outlets and grocery stores.