You'll want to include collard greens as one of the vegetables you eat on a regular basis if you want to receive the fantastic health benefits provided by the cruciferous vegetable family.
It is very important not to overcook collard greens. Like other cruciferous vegetables overcooked collard greens will begin to emit the unpleasant sulfur smell associated with overcooking. To help collard greens to cook more quickly, evenly slice the leaves into 1/2-inch slices and the stems into 1/4-inch pieces. Let them sit for at least 5 minutes and then steam for 5 minutes.