Talipot palm (Corypha umbraculifera) leaf manuscript preparation: boiling in dummala bark water?

Crafting ancient Buddhist palm-leaf manuscripts (Puskola) requires leaves harvested from the Talipot palm just before its once-in-a-lifetime terminal inflorescence opens. The tender leaf segments are separated and rolled into loose coils, then boiled for hours in copper cauldrons with unripe papayas and crushed Halmilla bark to leach out organic starches and destroy fungal larvae. The leaves are dried in cool shade, polished over smooth areca-nut wood trunks, and cut into uniform rectangular folios. Monks inscribe Pali texts into the leaf skin using an iron stylus (panhinda); the faint scratches are blackened with an oily paste of charcoal, wild dorana oil, and resin, then wiped clean with warm rice bran.