Citric Acid (Nimbo Phool / Tatri) Citric acid is a naturally-occurring compound with a tart, acidulous taste. It is odourless, colourless and crystalline. It is extracted from the juices of fruits and processed into a white crystal / powder that is used as a flavouring agent and preservative in foods and beverages containing vitamin C. Citric acid is used to give lemonade, jams, sweets and confectioneries their characteristic acidulous flavour.