Beer Bottles and Growlers
There are many types of beer bottles that you can use to bottle your brew, but if you want to store your beer for a long time, it is crucial that you opt for dark coloured bottles. It is a common fact that the darker your bottle is, the less light reaches your beer.
But what makes dark coloured bottle great in preserving beer? Studies have shown that when the beer is exposed to sunlight, it [light] breaks the alpha acids found in hops that, in turn, react to the sulfur found in beer thus resulting in a skunky smell. This particular smell resembles the stench of being sprayed by a skunk.
What coloured beer bottles do is filter out the UV and visible lights that cause the chemical reaction. Even if you say that you handle your beer properly and store it in a dark place, you cannot really tell how much exposure the bottle will get in its lifespan. Green bottles may also be used, but they are not as effective in filtering light compared with the brown bottles.
While coloured bottles are very beneficial in keeping the beer fresh and good-tasting, there are some disadvantages that you need to be aware of. One of the obstacles of using dark-coloured bottles is that it can be difficult to inspect the beer for any defects or even foreign matter floating in it.
**It should also be noted that light does have an effect throughout the brewing process. Once you have started your fermenting you should expose your brew to as little light as possible, that is until such time as it it being poured from a bottle or dispensed from a keg.