Wash and drain garlic scapes. Snap into 2 inch lengths starting from the bud end. As you near the stalk end, string the scape. Once it is too woody to break, discard.
Heat a wok or large fry pan. Add 1 tablespoon vegetable oil. Fry prepared garlic scapes for 4 to 5 minutes. Remove and set aside.
Add remaining 2 tablespoons vegetable oil to the wok. Fry garlic for 30 seconds. Add scallops and continue to fry for another 1 minute.
Return garlic scapes to the wok.
Add soy sauce, Shao Hsing cooking wine, and salt. Fry for another minute.
Stir in cornstarch mixture. Allow it to thicken. Turn off the stove.