Meanwhile, remove dark green tops from scallions and thinly slice on a diagonal; transfer to a small bowl of ice water and let sit until scallions begin to curl, 10 — 15 minutes. (bonappetit.com)
Trim roots and dark green tops off of leeks, leaving the root end intact so the leeks don't fall apart when sliced. (stripedspatula.com)
Also known as green onions, scallions are bright white at the bottom with dark green tops, typically sold in bunches, and they should be firm. (businessinsider.com)