Coffee gives tiramisu a counterpoint to its rich cream and sweet biscuits. Espresso is a familiar choice because it supplies concentrated flavour in a small volume, but concentration and taste matter more than declaring one brewer indispensable. Prepare the coffee ahead of assembly and let it cool before using it as a soak.
Choose a coffee that remains recognisable beside mascarpone and cocoa. A fuller, chocolate-oriented blend is an accessible starting point; a brighter coffee can change the dessert's balance. Taste the coffee itself before adding sweetness or alcohol, and remember that an excessively harsh cup will not become balanced simply because it is hidden in a dessert.
Marsala is an optional stylistic decision rather than a requirement for every version. Adjust the soak carefully so the biscuits absorb flavour without disintegrating. The complete dessert also depends on safe preparation of its dairy and egg components. Follow a reliable food-safe recipe for those stages instead of treating a coffee-pairing article as a complete handling guide.

The conversation
A good question can make a better brew.