Soft-serve frozen foam: Can it keep beer colder longer?

A Japanese brewer is topping off glasses of beer with foam dispensed like soft-serve ice cream — and the concept promises to chill the ale for 30 minutes

Frozen foam
(Image credit: YouTube)

Treating yourself to a nice cold brewski in the summertime is all very well... if you guzzle the beer down before it turns warm. It's an issue that every even slightly sluggish drinker has had to contend with — but maybe not for much longer. The good people at Kirin, the Japanese brewing giant, have developed a frozen beer foam that can be dispensed atop a glass of beer the same way soft-serve ice cream is swirled into a cone. (Watch a demo video below.) The manufacturer says the frozen foam can keep a stein of beer cold for 30 minutes. Here, a guide to the invention:

What is the foam made of?

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