I copied this from the Beeradvocate forum. Someone emailed Tod and got the oak and port regime from him.
All of Kate is lightly oaked. We make our own Portwood simply by infusing oak spirals ( The Barrel Mill, Avon, MN- 800.201.7125) with local Port. Of course if I told you the amounts and proportions I have to kill you!! Actually, we take 6 spirals and break them up, place them into a 10 gal. corny keg and pour 3 bottles of Tawney Port over the spirals. We add about 10 PSI to the keg and let the concoction sit for 18-25 days. Then we fill the remainder of the 10 gal. keg with Kate. Let it sit at ambient temp for 45-60 days then inject the 10 gals back into the 440 gals of KtG. Once the keg is empty we then back fill the 10 gals and let the Kate sit on the oak for another 6 months. This become the double oaked Kate. Very rare, only about 56 bottles produced. Hope this helps. Kate can age for 6 years once in bottles, if truth be known!! Cheers! Tod Mott