Building And Using Coolers As Mash Tuns
By John Palmer (Brewing Techniques)
A “Cooler” Way to Ease into All-Grain Brewing
The transition from extract to all-grain brewing doesn’t have to be complicated. Here’s how you can convert a common picnic cooler into an all-grain mash/lauter tun — it’s no sweat.
Or you can buy one of our already converted mash tun coolers here!
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https://www.morebeer.com/category/cooler-systems-allgrain-brewing.html#Cooler%20Mash%20Tun