I have a pretty typical converted keg mash tun. Over the course of a sixty minute mash it loses 8-10º F. My previous mash tun, a converted cooler would only drop a few degrees and I would like to be able to maintain a consistent temperature. Instead of direct-firing, running the pump, wasting propane, overshooting the temperature and potentially scorching the wort, I want to insulate the tun.
- The insulation should be able to take the heat of a burner
- It should be easy to clean
- The temperature of my mash should only drop a few degrees in an hour
How can I better maintain my mash temperature?