Smash Burger with Sweet Corn Relish and Dill Pickle Sauce

Ingredients

• 1/2 white onion, sliced
• 1 1/2 teaspoons white wine vinegar
• 1/2 teaspoon granulated sugar
• 1/2 teaspoon sea salt
• 10 oz corn kernels
• 3 tablespoons mayonnaise
• 2 teaspoons fresh lemon juice
• 1/4 cup fresh dill, chopped
• 1/4 cup mayonnaise
• 1/4 cup Greek yogurt, full-fat
• 1/2 cup ketchup
• 1/4 yellow onion null, finely minced
• 4 small dill pickles, grated
• 3 teaspoons pickle juice
• 1 teaspoon granulated sugar
• 1 lb ground beef
• 2 teaspoons salt
• 8 slices American cheese
• 12 rounds pickles
• 4 burger buns