Originally Posted by jknapp12105
Can someone explain what "efficiency" is and give me an example of it?
A short answer is that the term efficiency is typically used to describe how much sugar a brewer is getting out of their grain. Most base grains, for example, will yield a specific gravity of 1.036 (edit: 1.036 or sooo)per gallon per pound of grain. If this number is used as 100% then a brewer can figure that he is getting 80% efficiency if he is able to get 1.0288 per gallon per pound of grain.
The term is used to describe both mash efficiency (numbers after mashing, pre-boil) and brewhouse efficiency (numbers of wort in fermenter). Hope that helps.