These have just been washed.
It took me about 5 minutes to cut and scrape. I don't scrape them all, they are pretty clean after washing, and I am not bothered about dark marks on the skin.
I cut up some fresh pumpkin to go with the jerusalem artichoke. Once cooked they will be mashed together.
It all looks very good in my 18th century brass trade kettle. Now I have to find something to go with it for dinner tonight.