Apple Cider Vinegar (Best Option)
1 teaspoon per 1 tablespoon balsamic vinegarApple cider vinegar contains acetic acid similar to balsamic vinegar but with a lighter, fruitier profile that works well in baked goods like pound cake. The acidity helps tenderize the gluten network, resulting in a soft crumb.
When substituting, use slightly less apple cider vinegar than balsamic to avoid excess tang. Mix well with the wet ingredients to ensure even distribution.
The final cake will have a subtle tang that enhances the buttery flavor without altering the classic pound cake taste significantly.