Is rakkyo a shallot?
No. Shallot is a perennial herb of the genus Allium in the family Liliaceae, which has a globular rhizome with a white or mauve outer skin and many links, similar to garlic, and shallots have flat, green leaves with a strong aroma, whereas scallions are perennial herbs of the genus Allium in the family Liliaceae, which have a white rhizome with many long, slender rootlets, and cylindrical, green leaves with a strong, spicy flavor, and therefore shallots are not scallions.