White Wine Vinegar (Best Option)
1 teaspoon per 1 tablespoon of lemon juiceWhite wine vinegar has a clean, mild acidity that mimics the sharpness of lemon juice, which is essential for balancing the richness of mascarpone in tiramisu. The acidity also helps to slightly break down the mascarpone, improving texture and mouthfeel.
When substituting, start with a smaller amount and adjust to taste, as vinegar can be more potent than lemon juice. Avoid overuse to prevent a vinegar aftertaste.
The final tiramisu will retain its classic tangy brightness and creamy texture, closely resembling the original recipe’s flavor balance.