cooking spray |
1 (1-pound) pork tenderloin, trimmed |
1/2 teaspoon salt, divided |
1/4 teaspoon black pepper |
1/4 cup chopped red onion |
2 tablespoons olive oil |
1 tablespoon cider vinegar |
2 teaspoons sugar |
1/2 teaspoon grated lemon rind |
1 ripe mango, peeled and chopped |
1 serrano pepper, seeded and finely chopped |
1/4 cup small mint leaves |