Lemon Juice (Best Option)
1 tablespoon lemon juice per 1 tablespoon white vinegarLemon juice contains citric acid, which reacts with baking soda in waffle batter to produce carbon dioxide bubbles that help the waffles rise and become fluffy. The acidity level is comparable to white vinegar, making it an effective substitute.
When using lemon juice, ensure it is freshly squeezed or bottled without added sugars to avoid unwanted sweetness. The citrus flavor is mild enough not to overpower the waffle's flavor profile.
Compared to white vinegar, lemon juice may impart a subtle citrus aroma, which can enhance the overall flavor complexity of the waffles without compromising texture or rise.