Altbier is a unique beer style that is often misunderstood. While it does share some similarities with lagers, it is not technically classified as one. Let me explain why.
Firstly, let's talk about the brewing process. Altbier is fermented at a moderate temperature using a special strain of top-fermenting yeast. This is different from lagers, which are typically brewed with bottom-fermenting yeast. The use of top-fermenting yeast in Altbier gives it a distinct flavor profile, with some fruitiness and a slightly estery character.
After fermentation, Altbier is then matured at a cooler temperature, often for several weeks or even months. This is where it starts to resemble lager beer styles. The cold maturation process helps to smooth out the flavors and allows the beer to develop a clean and crisp character, similar to lagers.
However, there are some key differences between Altbier and traditional lagers. One of the most significant differences is the use of hops. Altbier tends to have a more pronounced hop bitterness and flavor compared to lagers, which are often more malt-forward. This hop presence adds to the overall complexity and balance of Altbier.
Another distinguishing factor is the malt profile. Altbier is typically brewed with a combination of pale and dark malts, giving it a deep amber to copper color and a rich malty backbone. Lagers, on the other hand, are typically brewed with lighter malts, resulting in a lighter color and a more delicate malt character.
In terms of serving temperature, Altbier is best enjoyed slightly cooler than room temperature, around 45-50°F (7-10°C). This is slightly warmer than most lagers, which are typically served at colder temperatures to enhance their refreshing qualities.
To summarize, while Altbier may exhibit some characteristics reminiscent of lager beer styles, it is not technically classified as a lager. Its use of top-fermenting yeast, distinct hop presence, and unique malt profile set it apart from traditional lagers. So, if you're looking to explore different beer styles and expand your palate, I highly recommend giving Altbier a try.