Fish Dumplings in Turmeric Sauce

- 2 lbs. cod or tilefish fillets (ask for heads and bones to make the 4 cups stock)
- 1 small onion, quartered
- 3 cloves garlic, sliced
- 2 tsp ground cumin
- 1/8 tsp cayenne pepper
- 1 egg
- salt and pepper
- 1 c matzoh meal
- oil for deep frying
- 4 c fish stock
- 2 T lemon juice
- 1/2 tsp turmeric
- 3 T tomato paste
- Italian parsley for garnish