Which type of bottles are better for preventing skunking?

Brown bottles are indeed the best choice for preventing skunking in beer. Skunking occurs when beer is exposed to light, particularly ultraviolet (UV) light, which can lead to the development of off-flavors typically associated with skunky aromas. The amber hue of brown glass effectively filters out UV light, providing superior protection for the beer inside compared to clear or green bottles.

Clear bottles allow nearly all light, including UV, to penetrate, making the beer more susceptible to skunking. Green bottles offer some protection but are still less effective than brown bottles. For example, many European lagers are sold in green bottles, which can still experience skunking if exposed to light for extended periods. Brown bottles minimize this risk, thereby helping maintain the beer's intended flavors and aromas as it remains shielded from light damage.