Meanwhile, in a large sauté pan, heat the oil over a medium-high flame. When almost smoking, add the shallots and sauté until soft, about 3 minutes. Add the garlic and sauté until the garlic is golden brown and the shallots are translucent, about 3 minutes (being careful not to burn the garlic). Add the clams, wine, 2 tablespoons of the parsley, and ½ teaspoon each of sea salt and pepper. Cover and simmer until most of the clams have opened, about 6 minutes (discard any shellfish that do not open). Whisk in the butter to thicken the sauce slightly.