Soda water is simply water with added carbonation. In the bar, this usually refers to the neutral, strongly sparkling water from a bottle or soda siphon. Unlike mineral water, it contains little to no minerals. The name comes from the English “Soda Water” and has become established internationally – even though in German it is often simply called “Sprudelwasser.”
What Soda Water Is
Soda water consists of pure water that has been pressurized with carbon dioxide. The result is a neutral, sparkling water without its own taste and without significant minerals. In a classic bar, it comes from a soda siphon, a bottle with a CO₂ capsule that releases the water sparkling at the touch of a button. Today, most bars use commercially available soda water from bottles because it is more practical and carbonates evenly.
The term “Soda Water” can sometimes be confusing because in German, “Soda” also refers to sodium carbonate – a salt that was once actually used to make sparkling water. Modern soda water no longer contains this salt. It is simply carbonated water that adds volume and freshness to long drinks, highballs, and spritzes without altering the flavor.
How to Recognize It
Soda water is clear, colorless, and vigorously effervescent. It tastes neutral, with a slight tingling on the tongue, without sweet, salty, or bitter notes. Compared to mineral water, it has a flatter, softer taste because it lacks minerals. On the bottle, the label usually reads Soda Water, Club Soda, or simply Sprudelwasser. Some manufacturers add minimal sodium or potassium to round out the flavor, but this remains subtle.
At the bar, you can identify soda water by the fact that it comes in large bottles or from the siphon and not from small mineral water bottles. The siphon has the advantage that the water remains under pressure until it is poured, making it particularly fresh and crisp. This makes a difference when making a Gin Tonic or a Mojito – the carbonation carries the aroma and enhances the freshness.
In the Bar
Soda water is the silent workhorse behind most long drinks. It dilutes spirits without overpowering their character and adds lightness to the glass. Classics like Gin Tonic, Whisky Highball, Mojito, Aperol Spritz, or Tom Collins would be unthinkable without soda water. It ensures that the drink is not too strong, not too sweet, and not too heavy. The quality of the carbonation is crucial: the fresher and finer the bubbles, the better the soda integrates into the drink.
Many bartenders swear by the siphon because it delivers the carbonation directly into the glass, allowing you to dose the amount precisely. Others use chilled bottles, which they open carefully to lose as little carbonation as possible. The important thing is to always add the soda last and not to stir it too much – simply lift it once gently – otherwise the CO₂ escapes and the drink goes flat. Soda water is also the base for homemade lemonades and shrubs when mixed with syrup, juice, or vinegar.
Common Misconceptions
Many confuse soda water with tonic water or ginger ale. Tonic water contains quinine and sugar, tasting both bitter and sweet at the same time – soda water is neutral. Ginger ale is a sweetened ginger lemonade and is not a substitute. Mineral water is also not the same: it contains minerals that can influence the taste, whereas soda water deliberately remains neutral.
Another misconception: Soda water is the same as still water carbonated with a home carbonation machine. Technically, this is true, but the quality of the carbonation and the fineness of the bubbles differ. Professional soda water is often more strongly and evenly carbonated. And no, soda water does not make the drink low in calories – that depends on the other ingredients.
Pair With
- Gin Tonic
- Mojito
- Whisky Highball
- Tom Collins
Frequently Asked Questions
Can I use mineral water instead of soda water?
Yes, but it changes the taste. Mineral water contains minerals that can distort some drinks. For neutral long drinks, soda water is the better choice.
What’s the difference between Soda Water and Club Soda?
Club Soda is a variant of Soda Water to which minimal minerals such as sodium or potassium have been added. The difference is barely noticeable in taste; both are interchangeable in the bar.
Why is soda water always added last?
Because the carbonation is sensitive. Stirring too long or too vigorously causes the CO₂ to escape and the drink loses its freshness. That’s why soda is always added last and only gently lifted once.The siphon keeps the carbonation fresher for longer because the water is under pressure. The result is often more effervescent. However, it works just as well from a bottle if it’s chilled and freshly opened.
