Hello Clara! It is completely normal to feel confused about which alcohol to use for tiramisu, as recipes online vary widely depending on regional preferences and modern adaptations.
The standard, traditional alcohol used in authentic Italian tiramisu is sweet Marsala wine. Marsala is a fortified Sicilian wine that carries rich notes of caramel, vanilla, and dried fruit. Traditionally, a splash of sweet Marsala is whisked with the egg yolks over a warm water bath to create a rich zabaglione base before folding in the mascarpone, or it is stirred into the freshly brewed espresso before dipping the ladyfingers.
However, if you are working on a budget, buying a bottle of sweet Marsala wine might not be the most practical choice, especially if you do not regularly drink fortified wines or use them for cooking. In my experience, there are excellent budget-friendly liquors that turn out wonderful:
Dark Rum: Dark rum is one of the most popular and accessible alternatives. It provides warm notes of brown sugar, oak, and vanilla that pair exceptionally well with coffee and dark cocoa powder. A bottle of basic dark rum is affordable, easy to find on sale, and very versatile for future baking projects.
Brandy: A standard budget-friendly brandy yields a depth of flavor that is actually very close to Marsala wine. It adds a subtle fruity warmth that cuts through the rich mascarpone cream without being overly aggressive.
Amaretto and Coffee Liqueur: Amaretto introduces a sweet almond aroma, which creates a lovely flavor twist if you enjoy nuttiness. Coffee liqueur (like Kahlua) amplifies the espresso notes nicely, though it is quite sweet, so you may want to slightly reduce the sugar in your egg mixture.
My top budget-friendly recommendation is to grab a decent bottle of dark rum or brandy. Stir roughly 2 to 3 tablespoons directly into your room-temperature espresso before dipping the ladyfingers. It produces a deeply flavorful, delicious tiramisu that feels luxurious without spending extra money. I hope your tiramisu turns out great this weekend!