plain soda water

Common unflavored options include unflavored mineral sparkling water, plain seltzer (often labeled Original), and cans marketed as 'pure' or 'plain' sparkling water — all are sold ready to drink.

Plain sparkling waters are typically zero calories and sugar‑free. Fruit-containing varieties may include a small percent of real juice and a few calories per can (for example, ~3% juice with about 4 calories or ~6% juice with about 10 calories).

Carbonation is described with terms like “sparkling,” “carbonated,” “gentle bubbles,” “tiny bubbles,” and “lightly carbonated,” and may reference carbon dioxide to describe fizz and mouthfeel.

Look for terms such as “Pure,” “Original,” “Unflavored,” “Sparkling Natural Mineral Water,” or simply “seltzer” to indicate an unflavored product.

Some products are described as naturally mineralized—water that picked up mineral salts like calcium and magnesium while passing through underground rock. Others emphasize being locally sourced or triple‑filtered and note filtration or sourcing rather than natural mineral content.

Reviews and product copy use phrases like “gentle bubbles,” “zillions of tiny bubbles,” “lightly carbonated,” and “satisfying fizz,” and often comment on the crispness or longevity of the carbonation.