In a small saucepan, heat the milk over medium heat. Be careful not to boil it. For a frothy latte, you can whisk the milk vigorously while it heats, or use a milk frother to create foam.
Brew your espresso and pour it into a large mug. Add the molasses and spices to the hot espresso. Stir thoroughly until the molasses is completely dissolved and the mixture is smooth.
Pour the hot milk into the mug with the espresso mixture. If you’ve frothed the milk, spoon the foam on top. For an extra touch of spice, sprinkle a little more cinnamon or ginger on top of the foam.