Puree 8 ounces shrimp (peeled and deveined) in a food processor with 2 teaspoons each cornstarch, minced ginger, sesame oil and dry vermouth and 1 teaspoon soy sauce until mostly smooth. Transfer to a bowl and stir in 1/2 cup thinly sliced trimmed asparagus, 3 tablespoons chopped chives, 1/2 teaspoon kosher salt and 1/4 teaspoon sugar. Spoon about 2 teaspoons filling onto a dumpling wrapper. Dampen the edges and fold into a half moon; crimp the edges with your fingers. Repeat to make 18 to 24 dumplings. Cook in a steamer basket set over simmering water until cooked through, 6 minutes. Serve with soy sauce for dipping.