Black Vinegar Noodles

Ingredients

• 1 tablespoon red chili flakes
• 2 tablespoons sesame oil
• 1 red chile, deseeded and finely chopped
• 2 cloves garlic, crushed
• 1 (3/4-inch-long) piece ginger, finely chopped
• 3 cups fine egg noodles or spaghetti, cooked
• 1 tablespoon light soy sauce
• 1 spring onion, chopped, plus more, to taste, for garnish
• 2 tablespoons black vinegar
• 1 tablespoon dark soy sauce
• 1/4 cup fresh coriander or cilantro leaves