Chinese Chicken Stock

5 lbs chicken backs (preferably both) or 5 lbs chicken necks (preferably both) 1 large onion , peeled & roughly chopped 3 scallions , halved 3 carrots ,[...]

2 whole chicken , cut up 18 -20 cups water 4 slices fresh ginger (quarter sized) 10 spring onions 8 cloves garlic 1/4 teaspoon turmeric 2 tablespoons salt 1[...]

2 1/4 kg chicken , cut into 8 pieces ginger , cut into 10 shards 10 garlic cloves , crushed 1/2 bunch green shallot , cut in half crossways 1 cup red onion ,[...]