Peking style chicken in wonton cups

Name: Peking style chicken in wonton cups
Ingredients: 1 packet wonton wrappers; Vegetable oil; 1 package chicken thighs bone in; 1 tablespoon Hoisin sauce; 2 1/2 tablespoons Soy Sauce; 1 1/2 tablespoons Dashi; 1 tablespoon Sake; 1 teaspoon Sesame oil; 1/2 teaspoon Sugar; 1 teaspoon Salt; 1/2 teaspoon Pepper; 1/4 cup Poaching liquid; 1 splash Sriracha; 1 bunch Scallions finely chopped (plus three whole scallions); 1 Seedless cucumber peeled and chopped; 1 piece Ginger