I do extract brewing, making 2.5 gallon batches using a 5 gallon BK.
I lose about .75-1.0 gallon during the 60 minute boil. Which is the more preferred method:
Start with 2.5 gallon boil and boil down to 1.5 gallon and then top off back to 2.5 gallon (Will help bring temp down to pitching...