Wonton Noodles

Name: Wonton Noodles
Ingredients: 2 teaspoons potassium carbonate Koon Chun sells it in bottles; 300 grams shrimp medium sized; 250 grams shrimp shells including heads; 15 grams dried pollack or dried flounder; 5 cups water; 3 scallions green and white parts seperated; 1 tablespoon sugar; 1 1/4 teaspoon salt to taste; 1/2 teaspoon soy sauce; 1 + 1/2 teaspoon potato starch; 1 teaspoon oyster sauce; 1 + 1/2 teaspoon Shaoxing wine or dry sherry; 1/2 teaspoon ginger juice; white pepper to taste; 1/2 teaspoon sugar; 1/4 teaspoon salt; 280 grams thin yellow Chinese noodles; 1 package wonton wrappers; sesame oil