Lemon Juice (Best Option)
1 tablespoon lemon juice per 1 tablespoon apple cider vinegarLemon juice works well because it provides a similar level of acidity to apple cider vinegar, which is important for balancing the richness of the cream cheese and activating any leavening agents. The citric acid in lemon juice also helps maintain the smooth texture of the cheesecake by preventing curdling.
For best results, use fresh lemon juice to avoid any bitterness from bottled versions. Be mindful of the slight citrus flavor, which can subtly brighten the cheesecake but may alter the flavor profile slightly.
Compared to apple cider vinegar, lemon juice results in a slightly more citrus-forward flavor but maintains the necessary acidity and texture, making it the closest and most reliable substitute.