Prep the Greens: Place the chopped scallions and salt into a heatproof glass or ceramic bowl.
Heat the Oil: Heat the oil in a small pot to $325-350^{circ}F$.
The Chopstick Test: Verify the heat by dipping a wooden chopstick into the oil; look for a steady stream of bubbles around the tip.
The Flash-Sear: Pour the hot oil directly over the scallions.
Finish: Stir briefly to infuse the flavors and let it cool before serving.