Exploring the History, Origin, and Uses of Citric Acid Citric acid, known as “Zitronensäure” in German, is a naturally occurring organic acid found in various fruits and vegetables, particularly citrus fruits. It plays a vital role in culinary arts, industry, and even our bodies. This blog post delves into the fascinating history of citric acid, its natural occurrences, production methods, chemical composition, and practical applications in cooking and baking. The Historical Background of Citric .