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Part of our obsession with beer comes with the way it looks - usually a golden to dark brown liquid topped with a cap of white foam. Our fascination with this dates back hundreds of years. But why does this phenomenon even occur? Well, here comes the science bit...

Beer foam is produced by bubbles of gas, usually carbon dioxide produced during fermentation, rising to the surface. The actual foamy white bit is made up of the wort protein, yeast and residue from the hops. The density and longevity of the head will be determined by the malt and other adjuncts from which the beer was fermented. If the beer is filtered or pasteurised then the beer can be carbonated using pressurised gas.

There is a lot of time and effort in the brewing process that goes into producing a beer that 'looks right' - including the foam. So, if it doesn't look right, then there may be something wrong. We recommend using the UltraBeer to unleash all those important flavours and aromas stored in the foam that the brewers have worked so hard to create.