Paper Ageing Sheets 25cm x 34cm (40 sheets)Kyusui sheet x 40` 40 These unique sheets of absorbent contain a natural Flavonoid which absorbs the moisture and the fragrance of fresh fish and meat. Can even be used in the freezer. To use, the sheets are placed between layers of meat or cheese and stored in a controlled environment with proper temperature and humidity. The enzymes and cultures in the paper help to break down proteins and fats in the meat or cheese, resulting in a more complex and