I just had this thought a few minutes ago, so I thought I thought I would see what y'all thought. Logically speaking, it would seem that doing a second mash instead of a batch sparge would increase efficiency without risk of using too much water or extracting unwanted stuff into the wort. My gut, OTOH, tells me there's got to be something wrong with it. I have to imagine that in all the thousands of years we have been brewing, someone would have tried it. And if it were a good method, it would have a presence in the brewing community. I would at least like to try the method on my next batch, but if someone gives me a good reason not to do it, I would be thankful to them for saving me from doing something stupid. Thanks.
-AJ
-AJ