View Table of Contents Cask Ale Preparation
Cask ale is a traditional offering associated with beers brewed in the British Isles. Today’s brewers are producing cask ale in casks, which are kegs that can accept side bungs and a keystone tap at the end of the keg. Primary fermented beer, at a temperature of approximately 45 o F and a yeast cell count of at least one million cells/ml, is transferred into the cask, along with auxiliary finings and a priming sugar. Auxiliary finings are silicates, alginates or isinglass added for thorough clarification and stabilization of the beer by agglomerating and settling yeast and other insoluble solids. The priming sugar, usually sucrose, is added to adjust the fermentable extract to the appropriate level. The beer is allowed to “condition” in the cask at the
retail outlet. The finings settle out and the carbonation is controlled with the use of spiles (soft spiles allows the CO 2 to escape, hard spiles plug the bung and allow the product to carbonate). The cask is then tapped through the keystone, which is positioned above the sediment, allowing clear conditioned beer/ale to be dispensed.
AB Vickers Finings and Antifoam
AB Vickers is the premier name in isinglass auxiliary finings. With roots in the United Kingdom, AB Vickers fully understands the tradition of isinglass finings for both brewhouse and cask conditioning applications. AB Vickers is also a major supplier of antifoam to the brewing industry. Gusmer Enterprises is proud to offer AB Vickers’ isinglass finings and antifoam in North America. Cryofine (CRY 151) Cryofine is purified isinglass in a convenient powder form. It is added to beer at the end of fermentation to speed maturation and improve filtration and clarity by fining out yeasts and protein particulate. For the purposes of rapid dissolution, enhanced performance, and long shelf life, the isinglass in Cryofine has been pre- hydrolyzed and freeze-dried. Cryofine also contributes to the actions of both silica gels and PVPP. Cryofine is regularly used in cask conditioned beers as auxiliary finings for solids settling and clarification. Pack Size: 1 lb Dose Rate: 1 - 5 g/hl; 0.4 - 2 oz/10 US bbl Foamsol S (FCS 130) Foamsol S silicone antifoam is an inert polymer which is highly effective in foam suppression in both the kettle and fermenter. Foamsol S preserves foam-positive proteins which contribute to the head retention quality of beer. One of the most important benefits of Foamsol S is increased iso-α-acid utilization from hops. Controlling foam in the fermenter will retain iso-α-acid and allow a reduction of up to 15% of the kettle hops. Other benefits include increased kettle and fermenter utilization, as well as eliminating the loss of product from foam during fermentation. Pack Size: 25 kg Dose Rate: 1 - 8 ml/hl; 0.03 - 0.3 oz/10 US bbl
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