Flanders red ales are indeed sour beers, but it is important to note that not all red ales are sour. Flanders red ales, also known as Flemish reds, are a specific style of beer that originates from the Flanders region of Belgium. These beers are known for their unique sour or acidic taste, which sets them apart from other red ales.
The sourness in Flanders red ales is a result of the specific yeast and bacteria used during fermentation. The primary yeast used is Saccharomyces cerevisiae, which is responsible for converting sugars into alcohol. However, in Flanders red ales, other microorganisms such as Brettanomyces and Lactobacillus are also intentionally introduced. These bacteria produce lactic acid and acetic acid, which contribute to the sour flavor profile of the beer.
The level of sourness in Flanders red ales can vary from moderate to strong. Some examples may have a subtle tartness, while others can be intensely sour. This variation is often influenced by the length of fermentation and aging, as well as the specific blend of yeast and bacteria used by the brewer. It is this range of sourness that gives Flanders red ales their complexity and depth of flavor.
One characteristic that sets Flanders red ales apart from other sour beers is their lack of hop bitterness. While many sour beers incorporate hops to balance the acidity, Flanders red ales typically rely on their malt profile to provide a counterpoint to the sourness. These beers often have a rich, caramel-like sweetness that helps to balance the tartness and create a harmonious flavor profile.
In terms of mouthfeel, Flanders red ales often exhibit a dry and slightly astringent quality. This is due to the presence of tannins, which are compounds found in the skins and seeds of grapes and other fruits. The use of oak aging in some Flanders red ales can further contribute to this tannic character, adding complexity and depth.
The overall sensory experience of a Flanders red ale is often described as being the most “wine-like” of all beers. This is because of the similarities in flavor profile, with the acidity and complex fruitiness reminiscent of certain red wines. The sourness, combined with the malt sweetness and tannic qualities, creates a beer that can be enjoyed and appreciated by wine enthusiasts as well.
While not all red ales are sour, Flanders red ales are a specific style of beer known for their sour or acidic taste. The sourness can range from moderate to strong, and there is no hop bitterness present. Instead, these beers rely on their malt sweetness and tannic qualities to create a balanced and complex flavor profile. Flanders red ales can be seen as the most “wine-like” of all beers, with their acidity and depth of flavor resembling certain red wines.