Sparkling water, seltzer water, soda water and carbonated water are just a few of the names for club soda. Although these names can be used interchangeably, for the sake of simplicity they will be treated as forms of club soda. Different types of club soda have some diversity in ingredients, but all forms share the same basic components. Water injected with carbon dioxide gas are the major ingredients in soda water.
Club Soda Occurs Naturally
The term "seltzer water" comes from Niederselters, the name of the German town where mineral water that contains carbon dioxide and carbonated water occurs naturally. Another natural form of club soda come from Bulgaria, where springs produce carbonated water.
Most Club Soda is Manufactured
The club soda people typically speak of is carbonated water that has been mixed with sodium bicarbonate, more commonly known as baking soda. This is where soda water gets its name. This form of club soda was widely used in the early to mid-20th century, when it became easy to make it at home using a soda siphon; it was then combined with whiskey to make a popular mixed drink.
Differences by Manufacturer
Manufactured club sodas typically have some sort of salt added. For example, the popular brand Canada Dry contains water, sodium bicarbonate, sodium citrate, potassium sulfate and disodium phosphate. Schweppes contains carbonated water, sodium bicarbonate, sodium chloride and potassium sulfate.
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Some varieties of club soda have flavoring added, such as lemon-lime. That change has appealed to those who find soda water a bit harsh but want to avoid the calories of sugary soft drinks.