Oh yah, I completely understand the partial boil concept; it was just the amount of water that raised the eyebrow - 1.5gal instead of 2.5 or 2.75gal. But if weight and basement steps is the answer, I get it. Cheers.I do a partial boil. I learned to brew that way back in 1994. The recipes I use were designed to account for this. Cooling the wort is easily done by topping off with chilled water. It does allow me to brew in a smaller kettle, but, more importantly, I wind up with only two gallons in my fermenter in the kitchen, so I'm only carrying 2 gallons down the basement stairs where I top it off. I'm 79 now. A long time ago I moved to a fermenter with a handle and a few years ago I quit topping off in the kitchen. I also moved my bottling to the basement. My kettle could do a much bigger boil if i wanted to do one.
Adding the other half of the extract witn 1/2 gal. water at flame out brings the wort down to about 170-175. This allows me to add my aroma hops in a sort of hop stand while it cools in the sink to about 100-110. I generally wait a few minutes before I start adding water for the sink bath. The whole thing takes about 20 minutes, and I don't actually take temperatures or time it; I just feel the side of the kettle. When I top off I have both chilled and unchilled water available, so it doesn't get too cold. I do measure temperature for pitching.
Edit: I used to live in a 100+ year old house and the basement steps were treacherous to say the least, so I can relate.
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