I bought a gallon of Doc Farwell's because that was all OBC Northwest had, but I will never in a million years use a gallon. So I am selling quarts for $20 each, repackaged in glass mason quart jars. There are three available. I can bring them to the Home Orchard Edu Center (most Tuesdays) or you can meet me at my house just S of Canby.
Thanks and happy grafting!
My son has decided to call it "Tree Mustard". We all cracked up when he said that. "Yeah, you just slice the tree open and mustard comes out!"