Green olive firewood’s british bbq charcoal range is ethically crafted in their environmentally friendly charcoal retorts at the farm in sussex using sustainable british woods.This gourmet grade is created only using dense hardwoods with qualities such as beech & oak. The density and larger size of the charcoal pieces (3-40cm) will ensure high temperatures for an extended period. The nature of the gourmet grade makes it ideal for use in professional kitchens and home bbqs.chefs and home cooks use our restaurant grade gourmet charcoal due to its consistent high temperatures, which provide a long and controllable cooking environment, as required in professional kitchens.