With the recent hikes in energy pricing, keeping warm has been a concern of many people... and good insulation is one obvious way of achieving this. I've been particularly interested in this subject as I needed to find an economical and convenient, economical and environmentally friendly way of keeping a mash warm, that I can easily supply with my beer kits.
This isn't as easy as you might think. An extensive search of the internet mainly reveals solutions based on glass fibre - not exactly food safe, or on expanded polystyrene - also not really food safe and one of the least ecologically friendly materials available. So no go there. But at last a solution presented itself.
WoolCool manufacture insulating liners made using 100% pure sheep’s wool, hygienically sealed in recyclable food-grade wrap. These guys sounded the business! I tried enclosing the pan in just one layer of their liner material and a simple packaging card board box for a one hour mash, and experienced a less than 1 degree drop. This is awesome performance and exactly what is needed to produce perfect beer!
WoolCool liners will now be provided with every kit and will perform the double function of cushioning the kit during transport and keeping the wort warm during the mash. Like all the best things in life they have multiple uses.