1. In a large heavy pot, think cast iron, render the salt pork. Remove the cornichon and set aside to drain on paper towels. 2. Add the onion into the hot pot and sautee slowly strirring often until translucent but NOT browned. This takes about 6 min. 3. Stir the flour into the onions and cook for about 3 minutes to form the roux. 4. Add seafood stock and clam juice, whisking to remove any lumps. Bring the stock to the boil and add in the potatoes. 5. Lower the heat and simmer the potatoes until cooked through. About 15 mins. 6. Sir in the clams, cornichon and light cream and bring to the temperature you prefer. Serve in large bowls with oyster crakers or saltines.