roots of Swiss chard

I just finished reading Gardening When It Counts by Steve Solomon - great book. Among a wealth of other interesting facts, the author pointed out that Swiss chard and beets are different varieties of the same species. To understand this a little better, I pulled up one of the chard plants to look at the roots. Sure enough, those are beets down there. I tried eating one of the roots. It was sweet, but very tough.

root of Swiss chard (Beta vulgaris)

root of Swiss chard (Beta vulgaris)