Suds – is a colloquial term for beer, especially in the US. It refers to the head of the beer, which in the most popular 20th century styles is fluffy, airy, and seen as a desirable characteristic of the drink. It was used in the somewhat infamous Budweiser commercial in 2015 to promote a chummy feeling among drinkers of that particular product versus fans of other, some would say better, styles.
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