Roasted Salmon with Spicy Cranberry Relish

Name: Roasted Salmon with Spicy Cranberry Relish
Prep time: 30 min
Total time: 30 min
Cuisine: American
Ingredients: 2.5 pounds skin-on salmon fillet; 2 cloves garlic, peeled and chopped; 1.5 teaspoons kosher salt, divided; 0.5 teaspoon whole black peppercorns, cracked; 1 lemon, zested and cut into wedges; 2 tablespoons extra-virgin olive oil, divided; 2 teaspoons Dijon mustard; 2 cups cranberries, fresh or frozen (8 ounces); 1 small shallot, minced; 1 serrano pepper, seeded; 1 medium Granny Smith apple, peeled and finely diced; 1 stalk celery, finely diced; 1 tablespoon balsamic vinegar; 2 tablespoons chopped fresh parsley, divided