Sprouts are sweeter after moderate freezes. Pick when sprouts are firm and well-formed, beginning with the ones at the bottom. The upper sprouts continue to form and enlarge as the bottom ones are harvested. For a once over harvest, to ensure you have enough for your holiday meal, pinch out the growing point at the top of the stem when the lower sprouts are 1-2 cm (½-¾") in diameter. A full stem of evenly sized sprouts will develop in about 2 weeks.
 
After harvesting the sprouts, there is another harvest-in early spring. The plant sends up long, edible flower stalks which are tender and sweet when steamed, or served raw with a dip.