There are two main mashing strategies. Either the entire mash is heated up according to a predefined pathway (infusion mashing),or the temperature of the mash is increased by removing, boiling, and pumping back parts of the mash (decoction mashing). A considerable breakdown of starch is only attained after the temperature is high enough to cause gelatinization, which broadly exposes the binding sites to the enzymes. As the temperature rises, enzyme activity accelerates, but also does the rate of enzyme denaturation. In addition to temperature enzyme activity and stability is also influenced by pH and wort composition.