For roasted Jerusalem artichokes, peel the Jerusalem artichoke tubers with a peeler and knife. The smoother the tuber, the easier it is to remove the peel.
Store the peeled tuber in cold water until all the tubers are peeled. Put a little olive oil in a pan and add the dabbed and sliced Jerusalem artichokes.
Fry slowly over moderate heat, turning frequently. Season the fried Jerusalem artichokes with salt and ground cumin.