Is lemon juice a substitute for vinegar?

While lemon juice can add acidity to a dish in a similar way to vinegar, it is not a direct substitute in most cases. Vinegar has a distinct flavor profile that differs from the citrusy taste of lemon juice. Furthermore, the acidity levels of lemon juice and vinegar are different, so they cannot be used interchangeably in recipes without altering the overall taste and composition of the dish.

Vinegar also brings its unique umami flavor and aroma, that is crucial for certain marinades, salad dressings or food preservations. It is best to refer to specific recipes or consult cooking professionals when considering substitutions to ensure the intended flavour and texture is achieved.