Heat up 1000ml cooking oil in the sauce pot to stir
fry chicken bone with the onions, celery, carrots,
mixed herbs, tomato paste, dark soya sauce and flour
until aromatic and brown in colour.
Add in water, bring to boil, simmer for 90 minutes
over a low heat. Remove from heat. Strain well.
Next, bring back to boil until thicken, ready to