Shibuzake Bukuro (Persimmon-dyed Sake Bag) Stylish Handmade Fabric NO.4 Size: 41X18cm + 35 + 30cm There are cut-off sections, so the usable parts are indicated. Although they have become less common now, these sake bags were dyed with persimmon tannin to enhance their preservation during the sake-making process in breweries. The subtle color variations resulting from the chemical reaction between persimmon tannin and alcohol, as well as the years of use, and the repaired areas, all contribute to their unique character.