Chinese-style chicken and sweetcorn soup

Name: Chinese-style chicken and sweetcorn soup
Prep time: 5 min
Cook time: 20 min
Total time: 25 min
Yield: 2 servings
Cuisine: Chinese
Ingredients: 1 can Canned sweetcorn; 150 gr of Chicken breast; 1 Chicken stock cube; 1 tbsp of Cornflour; 1 pinch of Fine sea salt; 1 Medium egg; 1 drizzle of Sunflower oil; 550 ml of Water; ½ White onion; ½ tsp of White pepper