Kattha (Catechu) is one of the principal ingredients used in the preparation of PAAN from betel leaves, for chewing purposes when, in combination with lime, it gives the characteristic red colouration.
With the advent of ready made paan (i.e., paan-masala) and gutkha (paan-masala with tobacco) and its ever-growing popularity among masses, the usage of kattha have increased many folds.