I am setting up for all grain brewing for the first time. I am planning on using a picnic cooler as a mash tun ... I have a few around the in different capacities. The larger coolers, a 13 gallon and a 14 gallon, have a spigot. The smaller 8.5 Gallon cooler I think may be a better fit for the 5 gallon (more or less) brews that I am set up for already.
any thoughts about mash tun cooler size before I start driling holes in the cooler?