The wort analysis methods are written, for example, for wort that is produced using the Congress mash method. These methods may also be applied in the analysis of wort which has been produced using a different mash method, particularly the isothermal 65 °C method. However, the reference values listed in the analysis method for Congress wort are not transferable.
This method describes how to convert the viscosity of laboratory wort to reflect a pre-defined extract content.
Suitable for all worts and mashes.
The viscosity of the Congress wort primarily provides information regarding the cytolytic degradation of the malt. A better indicator of this, however, is the viscosity of the isothermal 65 °C mash. The Congress mash method consists of a longer β-glucan rest, the 45 °C rest, after which the mash is immediately heated to 70 °C, and thus excluding an adequate β-glucan solubilase rest. (R-206.00.002 Congress Mash Method). Therefore, the degree of cytolytic degradation in different malts cannot be satisfactorily quantified. The isothermal 65 °C mash serves to reveal these differences more starkly through the high temperature at mashing-in and the intense β-glucan solubilase rest (R-207.00.002 Isothermal 65°C Mash Method). Likewise, it provides a good indication of the expected duration of the lautering process.