Chiller, Immersion In Stock Now

Water goes in, heat goes out. You can't explain that.

An immersion chiller is used in homebrewing to lower the temperature of the hot wort to a level suitable for inoculating with yeast. Place in the brew pot five minutes before you turn the heat off to sterilize. Pump cold water through the immersion chiller to cool the wart. Redirect the output water to your garden or something.