The Moosari community of traditional metal casters of the Kammalan caste in Kerala have perfected the complex technique of casting large cauldrons in one single piece, using the lost-wax process. The charakku and the uruli are the two important vessels made by the Musaris. So arduous is the process of preparing the clay mould, the wax replica and the final casting, that elaborate ritual prescriptions are observed by the Musaris for a faultless casting. The preferred metal for casting is bronze.

The stark simplicity of the charakku with its smooth spatial contours lends a resolute solemnity to its size and utility as a ritual cooking vessel for payassam.