The mouthfeel is smooth, with low to moderate carbonation and no astringency. Flute glasses display the lively carbonation, sparkling color, and soft lacing of this distinct style. Some beers undergo a fermentation in the bottle, giving natural carbonation. Some beers undergo an additional fermentation in the bottle giving natural carbonation. This final fermentation creates a small amount of carbonation. Adding flavors or carbonation will cost extra. The taste is light and crisp, with some bite from the carbonation. Soda makers may reach a higher level of carbonation than home soda siphons. CAMRA's states that real ale can only be served without the use of additional carbonation. In some older preparations, this resulted from natural fermentation used to build the carbonation. All of these beers are high in carbonation and low in hop character. Fermentation must be conducted in an air-tight container in order to achieve carbonation. A lighter body from higher carbonation may be noticed. The campaign introduced "Utica Club Natural Carbonation Band Beer Drinking Song". Initially cylinders were mostly used for carbon dioxide in carbonation or dispensing of beverages.