Baird Brewing - YS4040 Suruga Bay Imperial IPA - 8,5% - 33cl
Alcohol Content (by volume) : 8.5%
Starting Gravity (degree plato) : 17.0
Finishing Gravity (degree plato) : 2.0
Bitterness Units (IBU) : 90
Color (SRM) : 4
Water: Soft, Cleanly Flavorful, Local
Malted Grain: Floor-malted Maris Otter & Pilsner, Rye, Caramel Un-malted Grain: Roast Barley
Sugar: Japanese Sudakito (Light Cane) & Korizato (Rock Candy)
Hops: Whole Flower Cones (no pellets or extracts) – Various Varieties
Yeast: House Scottish Ale Strain
Bryan’s Brewing Notes
CO2 Gas is a critical yet largely unspoken of ingredient in beer. Some brewers refer to it as the secret “fifth ingredient.” CO2 gas is what gives beer its sparkle and effervescence. CO2 gas, of course, is a byproduct of yeast fermentation. Capturing this fermentation-derived CO2 gas in the beer as the means to carbonate it is known as Natural Carbonation. Forced carbonation is the process of introducing extraneous bottled CO2 gas into the beer prior to packaging because the brewer has not captured enough of the fermentation-produced CO2. Most beer in the world is force carbonated. Natural carbonation through Secondary Fermentation in package is to me the most magical of brewing processes. Known as Bottle- or Keg-Conditioning, this process involves a second fermentation in package in which resident yeast metabolize available carbohydrates. This is like the carbonation process in Champagne.
In Suruga Bay Imperial IPA, we achieve this bottle- and keg-conditioning through a German method called Krausening (blending a small portion of peak primary fermentation wort into the Suruga Bay beer that is to be packaged). A secondary fermentation is thus kicked off in the packaged Suruga Bay, naturally carbonating it and producing a continued evolution of flavor and condition. Baird Beer is alive, not dead, in package. I believe natural carbonation through secondary fermentation in package to be the single most important processing technique we employ in the crafting of Baird Beer. Of all our year-round beers, Suruga Bay Imperial IPA is my favorite example of the fantastic taste imparted by this magical natural alchemy.