Sweet Plantain Soup with Pineapple Blood Orange Salsa

Name: Sweet Plantain Soup with Pineapple Blood Orange Salsa
Ingredients: 1/2 cup diced fresh pineapple; 1 blood orange, peel and pith removed, cut into supremes and diced; 1 tablespoon finely chopped fresh ginger; 1 serrano chile, stemmed, seeded, and minced; 2 tablespoons fresh lime juice; 1 salt; 1/4 teaspoon pepper; 1 1/2 tablespoons unsalted butter; 2 large ripe plantains, peeled and sliced on the diagonal into 1 1/2 inch pieces; 2 teaspoons dried oregano, crumbled; 2 leeks, white parts only, well rinsed and finely sliced; 2 medium parsnips, peeled and finely chopped; 3 cups chicken stock; 3 cups milk; Juice of 1/2 lemon; 1 teaspoon salt; 1/4 teaspoon freshly ground black pepper