Cocoa pods are worth considering because they are eco-friendly, cost-effective, and potentially sustainable. Alkali metal carbonates, primarily K2CO3, are found in cocoa pod ash . Potash derived from cocoa pod husks (CPHs) is used in the transesterification of soybean oil into biodiesel . However, in some parts of Africa like Nigeria, cocoa pod ash is primarily used to make black soap. Recent research indicates that cocoa pod ash has the potential to be used as a biodiesel production catalyst in the transesterification of esterified palm kernel oil , waste cooking oil , and chicken fat oil .