VitaVegan Citric Acid 10g The VitaVegan Citric Acid 10g is a convenient and versatile product. You can use it as a gelling agent, to bring up the acidity level, to prevent browning or as a flavouring in salads, for example. You can replace lemon juice with this citric acid. The sachet contains 10 grams and is roughly equivalent to 160 millilitres of lemon juice.