Aromatic Senko is the product which is made of powdered bark of Machilus thunbergi together with the powder of fragrant woods such as the sandal tree and agalloch, other perfumes, charcoal powder and other materials and is produced through the process of kneading, molding into the shape of stick and then drying.
匂い線香は、椨（タブノキ）の木の樹皮を粉末にしたものに、ビャクダン（びゃくだん）や香木伽羅（きゃら）といった香木の粉末や他の香料、炭の粉末、その他の材料を加えて練り、線状に成型・乾燥させたもの。