In brief
King Arthur Baking's Tiramisu Layer Cake uses prepared cake layers, coffee syrup and mascarpone filling. Soaking is a separate step.
Useful to know
King Arthur Baking's Tiramisu Layer Cake uses prepared cake layers, coffee syrup and mascarpone filling. Soaking is a separate step. [1]
This does not simply mean adding coffee to raw batter. When adapting it, consider how much liquid the chosen base can absorb and follow assembly and chilling instructions for the complete dessert.
Sources
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