Selection and Storage

When selecting greens for cooking, remember they cook down considerably -- from one-quarter or more -- from their original volume. So purchase accordingly, i.e., 1 pound raw kale yields about 2 1/2 cups cooked kale; 1 pound mustard greens yields 1 1/2 cups cooked greens.

To store greens, wrap them in damp paper toweling, then place in a perforated plastic bag and refrigerate. If the greens are purchased in good condition and if the paper toweling is kept moist, most varieties will keep one week.