I have twice now actually dug up a piece of my ginger plant to make something! Fresh ginger is the best. I just push aside soil with a finger until I find an outlying piece of root
This made-from-scratch chai is fantastic. So far I make the chai only once every few weeks- it is a detailed process that takes some time, and if I cut too much ginger root too often, I won't have any plant left! Perhaps I should start another pot of it so I can harvest regularly. It did its best ever this summer, by the way, kept in nearly complete shade under the deck. Near the edge of things, where it received plenty of indirect light.