Have everything prepared before you start this dish. Clean the shrimp and pat dry on paper towels.
Heat a wok or large heavy frying pan over highest heat. When hot add the oil, salt and garlic and toss for just a few seconds. The garlic should change color right away.
Add the shrimp and toss constantly until they all change to a bright orange color. Throw in the green onions and sesame oil and toss for a few seconds more. Add the sherry and cover the pan.
Turn off the heat and serve immediately.