I cooked up a mess of greens tonight. This is how I did it. First get as much swiss chard, spinach or other greens you want to saute. Grab a clove or two of garlic. Chop it up. Devein the chard by ripping the green away from the stems. Set aside greens. Chop stems up into chunks. Heat olive oil or Italian salad dressing with oil in a pan . When the oil is hot add the stems and saute them with the garlic for about 5 minutes or so until they are starting to get tender.
Add greens. Cook them until they are wilted.
When you are done, you will have some nice healthy greens to go with your meal. Greens are high in so many vitamins and minerals. Here is a link to information about it. SWISS CHARD
Radish greens are also very healthy. They may be a little prickly when picked but that will go away when cooked. Some people eat them raw.