Warm Beet Greens with Sour Cream Dressing

Thrifty in the kitchen. Generous at the table. That would be the cooking mantra I grew up with. If you bought beets, you'd use both the tops and the roots. My grandmother steams beet greens in water and dresses them with a little balsamic vinegar, salt and pepper. The sour cream dressing is one she makes for salads. I combined the two. Because isn't that what's supposed to happen to family recipes?