Grilled Salmon with Creamy Cucumber-Dill Salad - Once Upon a Chef

Ingredients

• 4 (6-oz) salmon fillets, skin on
• 1 tablespoon extra-virgin olive oil
• ¾ teaspoon kosher salt
• ½ teaspoon freshly ground black pepper
• 1 English cucumber ((also called hothouse cucumber))
• 1/3 cup finely sliced red onion, (from one small red onion)
• ½ teaspoon salt
• ¼ cup + 2 tablespoons sour cream
• 3 tablespoons mayonnaise, (best quality such as Hellmann's or Duke's)
• 2 tablespoons white wine vinegar
• ¼ cup chopped fresh dill
• 1 clove garlic, (minced)
• ½ teaspoon sugar
• Freshly ground black pepper (to taste)