Shrimp and Scallion Stir-Fry

1 tablespoon vegetable oil
1 pound large shrimp, peeled and deveined
2 garlic cloves, minced
1/2 teaspoon red-pepper flakes
2 bunches scallions, cut into 1 1/2-inch pieces
2 tablespoons fresh lemon juice
Coarse salt
Cooked rice, for serving

Heat a large skillet or wok over high until hot. Add oil and swirl to coat skillet. Add shrimp and stir until almost entirely pink, 1 to 2 minutes. Add garlic and red-pepper flakes and stir until fragrant, 30 seconds. Add scallions and stir until bright green, about 1 minute. Add lemon juice and 2 tablespoons water. Cook, scraping up any browned bits from skillet, about 1 minute. Season with salt and serve over rice.

Source: http://www.marthastewart.com/recipe/shrimp-and-scallion-stir-fry?backto=true&backtourl=/photogallery/15-minutes-or-less-main-dish-recipes#slide_28