IWA 5 Reserves represents a new frontier: a sake composed entirely of aged base
components, each one individually bottled and matured at Shiraiwa over the years.
Where the annual Assemblages of IWA 5 draw upon youthful energy and seasonal
nuance, Reserves is built from a growing patrimony of matured elements — some as
young as two years, others aged for six. The average age is four to five years,
reflecting a deep commitment to curation and patience.