While recently riding shotgun on a brew day for a friend, Chris Stephani, I was intrigued to see that his mash tun utilized a normal half barrel keg, and had a bottom drain, based on the normal tap port of the keg used upside down. He has a flat silicon custom for that connection to a normal 1.5" TC. It drips just a very small amount, and I think he really wants to redo it, but it works. And best of all, it uses a very efficient bottom drain that leaves no lost head space or dip tube through false bottom. I was enamored...
