I washed both, then cut off the beets and the swiss chard stalks.
I also removed the center of each swiss chard leaf.
I cut the swiss chard in strips.
The beet leaves were small, so I left them whole.
I filled two pots of water (salted), brought to a boil
then put in the greens. Both take about 3 minutes.
Just add butter, and serve.
There's not a lot of difference in flavour; the swiss chard is slightly milder.
Both are as tasty as they are healthy!