Homemade Magic Chocolate Sauce with Garam Masala and Ginger

Name: Homemade Magic Chocolate Sauce with Garam Masala and Ginger
Ingredients: 8 ounces quality dark chocolate, coarsely chopped (Do not use chocolate chips); 2 tablespoons coconut oil; Kosher salt; 1/2 teaspoon ground ginger, plus extra for sprinkling; 1/2 teaspoon store-bought or homemade garam masala, recipe follows; Vanilla ice cream, for serving; Coarse sea salt for sprinkling, optional, see Cook's Note*; 3 large cinnamon sticks (if you have the kind you get at Indian stores, it's about 3 tablespoons of cinnamon bark bits); 3 tablespoons whole cloves; 1/4 cup green cardamom pods, shelled, husks discarded (about 2 tablespoons of seeds); 4 large black cardamom pods, shelled, husks discarded (about 1 tablespoon of seeds), optional