The Kagzi Nimbu (Citrus aurantifolia) is a small, thorny tree native to India and Southeast Asia. It produces small, green or yellowish lemons that are highly acidic and rich in vitamin C. Kagzi Nimbu is a popular ingredient in Indian cuisine, used in beverages, marinades, and desserts. The fruit is also valued for its medicinal properties, including antioxidant and antibacterial benefits.