Storing
Filtered beer tends to have a relatively short shelf life, rarely more than a year, as many compounds in the sterile beverage break down into unpleasant tasting ones. Live yeast inside the bottle acts against these processes, giving the beverage a much longer shelf life. A good bottle-conditioned beer can maintain its drinkability for many years, and some can be aged for decades.
Bottle-conditioned beers vary in clarity. If the yeast remains in suspension, the drink can appear murky or even chunky. But if the yeast is dense and settles, the drink can be completely transparent with only a thin yeast layer at the bottom. The yeast solids are usually referred to as the sediment or dregs, especially once opened.
Read more about this topic: Bottle Conditioning
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