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Mash Temperatures
temperature Activity Duration Effect on Wort
35c/94f Acid rest for under modfied malts. 1-24 hours Lowers Ph when using low calcium water
50c/122f Protien rest. 15-60 min Malt protiens and adjunct starches break down
60c/140f Beta-Amylase rest. Converts starches to fermentable sugars. 15-90 min. Yields a wort high in fermentables low in dextrines. high alcohol/light body
65c/149f Alpha and Beta-Amylase rest. Converts starches to equal parts fermentable sugars and dextrines. 45-90 min. Yields a wort with a well balanced ratio of dextrines and fermentables.
70c/158f Alpha-Amylase rest. Converts starches to dextrines. 15-30 min. Yields a wort high in dextrines low in fermentables. Big body/low alcohol
76c/168f Alpha and Beta-Amylase convertion stops. 5-15 min. Reduces vuscosity and aids in sugar run off.
77c/172f Maximum sparge temperature. 45-60 min. Possible tannin extraction if mash is above 75c/170f.