White Vinegar (Best Option)
1 tablespoon per 1 tablespoon of lemon juiceWhite vinegar is a strong acid (acetic acid) that mimics the pH-lowering effect of lemon juice, which helps break down meat proteins and tenderize the meatloaf. It also balances the overall flavor by adding brightness without introducing competing flavors.
Use it sparingly and mix well to avoid any sharp vinegar taste. If the vinegar flavor is too strong, reduce slightly and compensate with a small pinch of sugar to balance acidity.
The final meatloaf will have a similar texture and moisture retention as when using lemon juice, with a clean acidic note that enhances the savory profile.