1. I put a bag of ice with some salt in a big plastic bin, then put my brewkettle in.
2. I put the sprayer head from my shower in the bin and ran cold water.
3. I used my autosiphon to pump water out of the bin and into another bucket.
My autosiphon doesn't have that high of a flow, so I had to watch it and take out some water with a cup or something.
The basic principle seems the same as a CFC, or at least fairly close.




