What aspect does carbonation add to the drinking experience of beer?

Carbonation significantly enhances the drinking experience of beer primarily by contributing a "zing and tingle on the tongue." This sensation occurs due to the presence of dissolved carbon dioxide gas in the beer, which, upon contact with the tongue, activates the taste buds and delivers a unique textual and sensory experience. This effervescence can accentuate the freshness and liveliness of various beer styles, making them more engaging and enjoyable.

While carbonation can inadvertently influence perception of flavor through the context of mouthfeel, it does not serve as a source of flavor complexity or sweetness. Furthermore, although certain levels of carbonation may influence the visual appearance of a beer by creating a frothy head or bubbles, the primary attribute that carbonation brings to the drinking experience is the lively sensation it imparts on the palate.