New answers tagged sparge
Copying most of my answer from http://homebrew.stackexchange.com/a/12575/3925 I've adapted my technique for BIAB over a few batches. These steps are my version of merging BIAB with all-grain and sparging. I've used this technique with all-grain recipies, and associated water temperatures for mash and sparge, and it turns out great. I got some buckets from ...
Sparging is done to rinse more of the sugars out of the grist which makes more efficient use of the grains, but that's kind of the trade off with BIAB. You probably could heat up more water and dunk your bag into it to get more sugar out, but you are still ultimately limited to the size of your boil kettle.
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