It reduces costs by controlling foam during the filling process, whilst also increasing the perception of fizziness in the finished poured beverage. (co2sustain.com)
-- Kombucha is best enjoyed cold and fizzy in our opinion, but sometimes fizziness is inconsistent when it comes to home brewing. (deliciouslyella.com)
This is of course what gives soda its notorious fizziness. (fearlesseating.net)