Briquette, a compressed mass of charcoal or other flammable material, often in regualr shape of a pillow, brick or even in bar form of either hexagonal or square shape (the most commonly available form of sawdust briquette charcoal).
Briquette charcoal was first manufactured in large quantities in the late 1960's, using starch or flour to bind fine charcoal powder together. At almost the same time, in Japan and Korea, a different method was used to produce the briquette, wood wastes (often sawdust) were compressed into hard mass prior to carbonization, and we differentiate the product as sawdust briquette charcoal from the briquette charcoal where post-binding is employed.
The sawdust briquette charcoal is produced without binder/chemical in the binding process, thus eliminating any unpleasant odor during burning. The same had been a popular barbecue charcoal for the last few decades especially in Korea and Japan, indoor barbecue is done almost in all restaurants in Korea today.
The Korean even referring the product as Yoltan(The "Hot Charcoal") and most believe this is the only suitable and hygienic charcoal for barbecue.
Today, due to the drastic increase in the production cost and the declining in the supply of wood timber (strict prohibition exports on raw timber from the developing countries), the activity is now found abundance in Indonesia, Malaysia, Philippines, Thailand and even in China. Unfortunately, the market is only restricted to the Asia region at the moment and it is hard to exploit into other markets even the move is to save all wood waste from the forest and at the same time saving the faith of all other forests where hardwood charcoal are produced/exported.