Add the chicken drumsticks, onion, butter, garlic, ginger, celery, carrots, tinned tomatoes, chicken stock, sweet chilli sauce and water to a large soup pot. Season with salt and pepper and bring to the boil and let simmer for 30 - 40 mins
Remove the chicken drumsticks from the pot and remove the meat off the bones, add the chicken meat back to the soup pot
Bring the soup back to the boil and add the packets of 2 min noodles and cook