Red Wine Hot Chocolate

Name: Red Wine Hot Chocolate
Prep time: 5 min
Cook time: 5 min
Total time: 10 min
Cuisine: World Cuisine
Ingredients: 180 milliliters whole milk (3/4 cup); 120 milliliters red wine, such as cabernet or merlot (1/2 cup); 1 teaspoon granulated sugar, or to taste; 1 teaspoon unsweetened cocoa powder; Pinch fine sea salt; 75 grams good-quality chopped dark chocolate, or chocolate callets (1/2 cup; 2 2/3 ounces); 1/2 teaspoon vanilla extract; Red wine marshmallows, optional, to garnish