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Tech. Q. Master Brew. Assoc. Am., 1988, 25(3), 90-93. English, sp

Making things clear.

Cowper, J.J.S. and Taylor, R.

Isinglass has been used for more than 200 years to clarify cask conditioned beer, but this process aid is being used increasingly to improve efficiency in filtered beer production. Origins of isinglass, commercially available forms (leaf, shred, floc, powder, freeze dried) and their preparation for brewery use are explained. Isinglass application in traditional and unitank storage processes are described, including the effect on suspended solids, filtration and tank utilisation. Cost savings in cellerage are estimated and benefits on haze and foam stability pointed out.
Keywords : beer clarification filtration isinglass