Chocolate Cream Puff Swans

Name: Chocolate Cream Puff Swans
Prep time: 45 min
Cook time: 25 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 0.5 cup water; 0.25 cup unsalted butter; 1 teaspoon white sugar; 1 pinch salt; 0.5 cup all-purpose flour; 2 eggs; 4 ounces dark chocolate, chopped; 4 ounces heavy whipping cream; 1 cup cold heavy whipping cream; 1 tablespoon white sugar; 1 teaspoon vanilla extract; 1 teaspoon confectioners' sugar, or as needed