Article taken from TIME
The geniuses at the Kirin brewery have developed the perfect solution to lukewarm, unappetizing beer by making their own frozen foam. The company created the frozen foam by cooling its Ichiban brew to 23 degrees Fahrenheit, while a machine continuously blows air into the mixture. The result is a frothy, creamy topping that is frozen and made from beer.
This looks interesting, I can see not far from know they may add flavour to that foam that will enhance flavour to the beer, just keep it natural!