The making begins with koji. Rice is washed, steamed, and seeded with koji mold, creating the base for the first mash. Water and yeast are added to the koji to form the starter mash; the second mash then brings in steamed sweet potato and more water, letting the main raw material become part of the fermenting moromi.
A single pot still turns that fermented mash into raw shochu. Storage or maturation, adjustment, and bottling follow, carrying the path of sweet potato, water, koji, and yeast into the finished drink. The local character of Satsuma shochu lives in a sequence of visible actions: steaming, seeding, mashing, distilling, resting, and bottling in Kagoshima.