Blanching method, fresh parsnip sprouts blanching, blanching can remove nitrates and nitrites in parsnip sprouts. Pour the parsnip sprouts into boiling water, turn them quickly, and the color turns green. Immediately into the cool water, after cooling, drain the water, spread out to dry the surface moisture, put as a plastic bag, tie the bag tightly, put into the refrigerator freezer, storage for a year is no problem.