Take the 2-minute tour ×
Homebrewing Stack Exchange is a question and answer site for dedicated home brewers and serious enthusiasts. It's 100% free, no registration required.

What is the difference between mashing and steeping grains in terms of preparation style or is "mashing" and "steeping" just word semantics?

share|improve this question

2 Answers 2

(Yes, it's semantics: the words have different meanings. :)

Mashing is the enzymatic conversion of starch to sugar, using alpha- and beta-amylaze naturally present in grain at the specific temperatures to activate them (~150°F).

Steeping is using hot water to extract flavor and color compounds from grain.

share|improve this answer

The end result is the same, but mashing implies that enzymes are converting starches into sugars. These enzymes work when held around 150°F. The two enzymes are alpha and beta amylase. Alpha works more at higher temperatures (optimal at 158°F) and cuts starches randomly into long chain sugars (only some of which are fermentable). Beta works at lower temperatures (optimal at 145°F) and cuts starches at the ends to create 2-glucose sugars (maltose) (which are fermentable). A balance is usually desired and usually ranges from 148-152°F, but higher and lower mash temperatures are certainly possible.

Steeping does not require mashing. Grain like crystal malts or roast barley have been fully mashed in the husk. This occurs during the roasting process. Hot water is required only to dissolve the sugars inside.

share|improve this answer
    
Thanks! When you mean "Steeping does not require mashing", do you mean crushing? This is what is confusing me. –  David C Jun 15 '13 at 5:52
    
No, they all require crushing to get to the stuff inside the grain. Mashing is the conversion of starch into sugar - this has already been done in steeping grains. –  Thomas E. Tamayo Jun 15 '13 at 10:39

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.