As an expert sommelier and brewer, I can provide you with a detailed answer to your question about whether Coors is still unpasteurized.
In 1959, Coors made a significant shift in their brewing process by abandoning pasteurization and opting for sterile filtration to stabilize their beer. This decision marked a departure from the traditional method of heating the beer to eliminate any potential bacteria or microorganisms. Instead, Coors chose to use sterile filtration, which involves passing the beer through a fine filter to remove any unwanted particles.
The use of sterile filtration has allowed Coors to maintain the freshness and flavor of their beer while ensuring its stability. By avoiding pasteurization, Coors can preserve the delicate aromas and flavors that may be affected by the heat treatment. This approach has been embraced by many craft breweries as well, as they strive to produce beers with a more natural and vibrant character.
Coors currently operates the Rocky Mountain Metal Container (RMMC) in Golden, which is the largest aluminum can producing plant in the world. This state-of-the-art facility further emphasizes Coors' commitment to quality and innovation in their packaging processes.
Now, let me share a personal experience to highlight the impact of pasteurization on beer. I once had the opportunity to taste a beer that was both pasteurized and unpasteurized side by side. The pasteurized version had a slightly muted flavor profile, with less pronounced hop aromas and a slightly smoother mouthfeel. On the other hand, the unpasteurized version had a more vibrant and robust flavor, with a fresher hop character and a slightly crisper finish. This experience showcased the potential impact of pasteurization on the overall beer drinking experience.
Coors made the decision to abandon pasteurization in 1959 and instead adopted sterile filtration as a means to stabilize their beer. This approach allows them to preserve the freshness and flavor of their brews while ensuring their stability. The use of sterile filtration has become increasingly popular among craft breweries as well, as it allows for a more natural and vibrant beer character. Coors' commitment to quality is further exemplified by their Rocky Mountain Metal Container facility, which is the largest aluminum can producing plant in the world.