Begin by softening the mascarpone cheese in the microwave for about 5 seconds to make it easier to blend. In a mixing bowl, combine the mascarpone with heavy cream, whole milk, and vanilla syrup. Using a milk frother, whip the mixture until it reaches a smooth, creamy consistency that holds soft peaks. Set this decadent mascarpone cold foam aside while you prepare the latte base.

In a medium saucepan, gently combine whole milk, vanilla syrup, cocoa powder, and rum extract, if using. Heat the mixture over medium-low heat, whisking continuously until it begins to steam, but be sure not to let it boil, as this could curdle the milk. The latte base should be velvety and aromatic, capturing that delightful tiramisu essence. Once warmed, remove from heat.

While the latte base is heating, brew your espresso or strong coffee using your preferred brewing method. Aim for about 1 to 2 shots of espresso, depending on your caffeine preference.

Once you've brewed your coffee, pour it into a large mug, creating a warm foundation for your drink. Carefully pour the prepared warm chocolate milk mixture over the espresso, allowing it to blend beautifully.

To finish off your Perfectly Creamy Tiramisu Latte, gently spoon the mascarpone cold foam on top of the latte. For a finishing touch, dust the foam with unsweetened cocoa powder for that classic tiramisu look. If desired, garnish with a lady finger for dipping. Serve immediately and enjoy each sip of this delightful dessert-coffee mashup!