By this, we mean that the bitterness turns sweet, and you might notice a toffee-like palate when drinking your beer. So, you can imagine how your beer will taste like for the next few weeks. Chances of a beer being exposed to light when stored are numerous. As a matter of fact, it is possible for it to be exposed to light inside your refrigerator or while sitting on the shelf of your local beer store.
Immediately the light hits a beer; a chemical reaction occurs due to the provided energy. Light has a detrimental effect on beer, and it becomes greater with higher energy light, which normally has a shorter wavelength. The energy produced by light with nm wavelength is greater than the one given out by light with a nm wavelength. Well, take it from us, you will prefer the beer in a brown bottle. We are not praising these types of beers, but truth be told.
Everyone wants the best flavor out of a beer, and a skunky beer is a total turn off. While both green and brown bottles help in filtering out the light, aluminum cans block it completely. Since most beers are not bombarded by lasers, they are struck by visible light that is between nanometer nm in wavelength and UV Ultraviolet light that is below nanometers. Brown bottles have the ability to block light below nm, while green bottles can only block out light under nm.
Can you now relate why your occasional Carlsberg, Heineken has a pretty off taste? We all want the flavors in our beers to be palatable and noticeable. Losing some flavors to the photochemical effect of light degrades the powerful taste that you could experience in a beer. To safeguard beers from possible sunlight damage, most brewers opted for a dark brown bottle to ensure that the final product reaches you uncompromised with a crispy freshness and perfect taste.
Beers in brown-colored bottles are not only in good condition- crispy and fresh but also attractive to the consumer. If you have watched the corona beer advertisers, they smartly recommend you take their brew with a slice of lime. Do you think it is to add the flavor? Of course, it is to mask this off-taste with lime. The colour of the bottle out of which our favourite tipple is poured is likely something we no longer think about — we are so used to seeing tall, green bottles of wine and smaller, wider brown bottles for beers and ales.
But why is the glass this colour? Beer was first bottled and sold commercially in the 19 th Century and glass was chosen to keep the beverages fresh and preserved between bottling and consumption. The industry experts chose clear glass - perhaps to show-off the product inside or maybe they simply didn't think that the colour of the bottle would affect the liquid? The clear beer bottles were effective throughout the winter but, come summer, the sun's UV rays were able to penetrate the transparent glass and turn the beer slightly sour both in taste and smell.
Although advanced, chemically altered hop extracts can help with skunking, they often do not offer the wide array of flavors and aromas of traditional hops. So ultimately, yes, clear bottles offer zero light protection and will cause the beer to skunk quickly. They are used mainly for marketing purposes to stand out. SC: Why do companies like Heineken still come out with beer in green bottles?
GT: After WWII, brown glass was high in demand, and some breweries had to resort to using cheaper, clear glass bottles. Other higher quality brewers decided to use green bottles instead to make their beers stand out. This became a status symbol for several European brewers, which is why it is still common to see import beers in the green glass bottles, despite the fact that they do a poor job of blocking UV rays. Oftentimes the six pack holders will have cardboard shielding along all sides of the bottles for added protection because of this reason.
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