Asparagus can come in either white or green. The main difference between the two lies in the presence of chlorophyll. Green varieties grow out of the earth (absorbing the sun’s rays) while the white stalks grow underground, and are harvested before they come to the surface. Green asparagus is commonly thought to be stronger in flavour and harder in texture, but contains more nutrients.
White asparagus, however, is more delicate, and is often considered a delicacy. Because it grows underground, it is much more labour intensive to harvest. Peruvian asparagus is often sought after for its exquisite quality and taste.