I grow it in my vegetable area, and the photo is mine though it does not really show how big it is!
At the moment I have about 8 and don't know what to do with them having eaten them in all different ways.
They are really nice and I have them on sandwiches mostly, and I believe they are nice, sliced with meat.
They grew from an Eden seed and I do little to them - have not fertilised apart from a bit of worm juice.
I don't think they are quite as "sharp" as the red ones are sometimes, and because I grow them myself, they have had no chemicals put in the ground to stop bugs.
Well worth planting if you have a family who would eat them...I believe they are good in soups also, and think they are sometimes called Asian radish?