Quote:
Originally Posted by starrfish
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"brewhouse efficiency" is the total efficiency of your brewhouse; its the amount of beer you should have been able to make (given amount of grain used, and assuming 100% extraction were possible),
minus any and all waste, any beer left in the lines, spilled durring transfer, left in the carboy, trub at the bottom of the kettle, etc.
pre/post-boil, or mash, efficiency is different. it is only the [total amount of sugars in the grain] - [amount of sugars you were able to extract]. it does not incorperate transportation losses, fermentation losses, spillage, or anything else.
that calculator is incorrectly labled "brewhouse efficiency". its actually just mash efficiency.