Sweet Potato Pineapple Soup

Name: Sweet Potato Pineapple Soup
Ingredients: 2 tablespoons extra virgin olive oil; 1 medium onion, chopped; 2 garlic cloves, peeled & finely chopped; 1 pound sweet potatoes, peeled & cut into 1 pieces; 1 cup pineapple, peeled & chopped into 1 pieces; 4 cups water; 1 tablespoon dried sage leaves; 1 tablespoon salt (and extra for final seasoning); 1/2 tablespoon freshly ground black pepper (and extra for final seasoning); 1/4 teaspoon ground nutmeg; 2 tablespoons toasted coconut (optional); 2 tablespoons chopped cashews (optional)