Peel the Yukon Gold potatoes and cut them medium dice.
Place the cut potatoes in a medium-sized soup pot with 16 oz of clam juice and 16 oz of seafood stock, along with two teaspoons of Kosher salt.
Simmer the potatoes over medium heat in the cooking liquid until the potatoes are completely tender, or about 30-35 minutes.
Remove the potatoes from the cooking liquid, and reserve the cooking liquid for use as the base for the chowder.
To prepare your clams, make sure you are working with high-quality, live clams from a vendor that you trust.
*If any clams have broken shells or smell bad, throw them out.
Rinse the clams under cold water to remove any excess sand.
Drain the clams well.
Add one Tablespoon of sunflower oil to a Dutch oven or deep-sided soup cooking pot.
Increase the heat to medium-high, until the oil is hot, but before it is smoking.
Carefully add the rinsed clams, and place a lid on top of the pot.
Increase the heat to high, and shake the pot with the clams gently as they steam for about two minutes.
When the clams have opened, transfer them to a plate and allow them to cool down.
Strain the cooking liquid from the clams into the liquid that you reserved from cooking the potatoes.
*It helps to use a very fine mesh strainer here to remove any sand particles from the clam juice that has been released from the steamed clams. If any clams smell bad, or haven’t opened after being steamed, discard them.
Pick the clam meat from the shells, and set the meat aside. Discard the shells.
Clean out the Dutch oven or soup cooking put, and add one Tablespoon of sunflower seed oil.
Add the diced salt pork, or pancetta, or smoked bacon. You can use a mix of whatever you like here.
Cook the pork for about four minutes.
Add the diced white onion, along with the diced celery.
Stir while cooking for about ten minutes, until the onions and celery are translucent.
In a separate medium-sized sauce pot, melt 4 Tablespoons of butter and add ¼ cup of all-purpose flour.
Stir this butter and flour mixture over medium heat using a rubber spatula, making sure to scrape the sides of the sauce pot as you cook to ensure that the butter and flour mixture arrived at a uniform golden-brown color. This mixture is your roux.
Once the butter and flour mixture is golden-brown in color, slowly whisk in the seafood stock liquid that you used earlier to cook the potatoes.
Continue to slowly whisk in the cooking liquid until you arrive at a thick, chowder-like consistency. Take your time with this process.
Add this thicken chowder liquid mixture to the vegetables and bacon that you cooked earlier.
Add the potatoes, and stir to combine.
Taste the mixture and season with Kosher salt and freshly-ground black pepper.
Cut the Sea Bass fillets into bite-sized chunks, and add it into the chowder.
When the fish is almost cooked, add in the steamed clams from earlier.
Stir in the freshly chopped dill, and taste.
Add more Kosher salt and freshly-ground pepper, if desired.
Serve hot, garnished with fresh, finely-sliced chives.