Defrost the shrimp paste: Let shrimp paste soften. Cut a small hole in the package corner.
Fill and stretch the ‘noodles’: Lay a wrapper flat, squeeze two thin lines of shrimp paste, fold in half, and seal the edges tightly. Gently pull both ends to make it longer. Repeat for all.
Boil the ‘noodles’: Drop noodles into boiling water. Cook 2–3 mins until they float. Save 2 tbsp hot soup water.
Make the aromatic sauce: In a bowl, mix 1 tbsp dried shrimp skin, 1 tsp sesame seeds, 1 tbsp scallions, ½ tsp chilli oil, 1 tbsp light soy sauce, ½ tsp dark soy sauce, 1 tsp vinegar, 1 tsp oyster sauce, and 2 tbsp hot soup water.
Combine and serve: Add noodles to sauce, mix well, garnish with scallions or sesame oil, and enjoy!