Provided is a method for producing a composition that includes at least 10 ppm of dimethyl trisulfide and can be used as a suitable flavoring for food products. The method is characterized in that a Chinese cabbage extract having a Brix value of 10 to 70 inclusive is heated for 20 minutes to 15 hours at a temperature of 40 DEG C to 180 DEG C inclusive.本發明係提供含有二甲基三硫醚10ppm以上且可使用作為適於食品的調味之組成物之製造方法,其特徵為將Brix 10以上且70以下的大白菜萃取物於40℃以上且180℃以下的溫度進行加熱20分鐘以上且15小時以內。