Vegetable Broth (Best Option)
1/4 cup per 1/4 cup chicken brothVegetable broth works well because it provides a mild umami flavor similar to chicken broth, which helps maintain the moisture and complexity in tiramisu without introducing meat flavors. The broth's lightness complements the coffee and mascarpone layers.
To ensure success, use a low-sodium vegetable broth to avoid excessive saltiness that could interfere with the dessert’s sweetness. Strain if needed to keep the texture smooth.
Compared to chicken broth, vegetable broth results in a slightly lighter flavor profile, which can be preferable in a dessert context, preserving tiramisu’s delicate balance of sweet and savory notes.