β Lemon Juice (Best Dairy-Free Option)
1 teaspoon per 1 tablespoon of apple cider vinegarLemon juice contains citric acid, which mimics the acidic profile of apple cider vinegar, helping to balance the richness of eggs and enhance flavor complexity in a frittata. The acidity also aids in slight protein denaturation, improving texture subtly.
When substituting, use slightly less lemon juice due to its stronger acidity and citrus flavor. Freshly squeezed lemon juice is preferred to avoid bitterness from bottled versions.
Compared to apple cider vinegar, lemon juice imparts a fresher, more vibrant acidity that can brighten the dish, making the frittata taste lighter and more aromatic without affecting the structure.