This technique can be used for leafy greens such as collards, kale, Swiss chard, and spinach. Blanched greens can be stored in an airtight container in the refrigerator for up to 4 days. See how to use blanched greens.
That bundle of fresh greens may look enormousâ€”until it cooks down. If you need a particular amount, weigh it in the store, or play it safe and buy two bunches. 1 lb. collards = 2 cups 1 lb. kale = 2 cups 1 1/2 lb. spinach = 1 1/2 cups 1 lb. Swiss chard = 2 cups