Citric acid is a natural preservative commonly used to add sour or citrus flavours to different foods. One teaspoon (5 grams) of this white powder can be equivalent in acidity to about 1/2 cup (120 ml) of lemon juice.

• Citric acid powder is an effective food preservative that can be used as a pH adjuster in confections and beverages. It is also great for making natural household cleaners and is the ingredient to add to get that fizzy effect on bath bombs.