At the beginning of the twentieth century, along with the development of the second industrial revolution, there were inventions in machinery in many fields, including the field of coffee roasting and grinding.
Many coffee roasters were born during this period, allowing the elimination of smoke or risks in the manual roasting process such as uneven ripening, burning... and creating many mutations in coffee flavor.
Coffee roaster, chimney style, metal material, made in France, circa 1940. Can be used on stovetop or wood or coal burning stove. Similar types of roasters are used in European countries.