The production process of coconut shell charcoal briquette Coconut shell charcoal briquette is a popular fuel source due to its high calorific value and low ash content. These briquettes are made from coconut shells and can be used for cooking, heating, and even powering machines. The production process of coconut shell charcoal briquette is intricate and requires several steps to ensure a high-quality product. The first step in producing coconut shell charcoal briquette is collecting coconut shells.