Thai-Inspired Chicken Coconut Broth

Name: Thai-Inspired Chicken Coconut Broth
Prep time: 10 min
Cook time: 8 min
Total time: 18 min
Cuisine: Thai
Ingredients: 14- ounces (400 g) boneless skinless chicken thighs, (sliced into 1-inch (2.5 cchunks); pinch of sea salt; pinch of ground white pepper; 1 teaspoon cornstarch; 1 tablespoon canola oil; 2 stalks of lemongrass, (sliced into 1-inch (2.5 cpieces); 2 cups (480 ml) hot vegetable stock; 1/2 cup (120 ml) coconut milk; 1 makrut lime leaf, (whole); 2 ripe tomatoes, (quartered, skin on); 5 1/4 - ounces (150 g) oyster mushrooms; 2 tablespoons fish sauce; juice of 1 lime; 1/2 teaspoon superfine sugar; cilantro, (to garnish)