Corn and Salmon Chowder

Name: Corn and Salmon Chowder
Ingredients: 4 ears corn; 3 tablespoons salted butter; 1 large shallot, chopped; 1 large Yukon Gold potato, peeled and cut into 1/2-in. dice; 1 garlic clove, chopped; 2 tablespoons flour; 1 1/4 cups milk; 1 cup half-and-half; 1 teaspoon kosher salt; 1/2 teaspoon pepper; 7 ounces salmon, skinned; 1 tablespoon chopped chives