Mashing
Temperature-Programmed ("Step") Mashing
Sometimes referred to as "step-infusion," this mashing procedure involves a series of rests at various temperatures in a mash mixer. It involves a protein rest and in some cases even an acid rest. The modified-infusion method mimics the traditional decoction-mash sequence, but with less satisfactory results (primarily because no part of the mash is ever boiled). However, temperature-programmed mashing is much simpler to employ and is less costly than decoction mashing in terms of number of vessels and energy costs. Temperature-programmed mashing can be used in lieu of infusion mashing too. One advantage of temperature-programmed mashing over single-temperature infusion mashing is that both specific enzyme activity and fermentability of the wort can be promoted by controlling the temperature and duration of stands at selected points.
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