Salmon and Corn Chowder

Name: Salmon and Corn Chowder
Ingredients: 1 1/2 cups corn kernels (about 2 ears); 1 1/4 teaspoons freshly ground white pepper; 1 bunch green onions, coarsely chopped, including half of greens; 1 cup heavy cream; 1 teaspoon kosher salt; 1/4 cup minced fresh dill; 2 pounds salmon fillets, skin and pin bones removed, cut into 2 inch pieces; 2 stalks celery, cut into 1/2 inch slices; 3 tablespoons olive oil; 4 cups fish or chicken stock; 8 ounces unpeeled small red potatoes, cut into 1 inch cubes; Grated zest and juice of 1 lemon