Definition
Seltzer is plain carbonated water. It contains no added minerals, sweeteners, or flavors. Think of it as the purest form of bubbly water. It's made by injecting carbon dioxide gas into water under pressure. It's a popular alternative to sugary drinks and can be used as a mixer in cocktails. Many people enjoy its clean, crisp taste. Seltzer is a calorie-free and hydrating beverage option.