Ibusuki Shuzo

In their own words

Quoted as the company wrote it, in Japanese. Translating a house's account of itself would make the words ours rather than theirs.

昭和62年、地元の蔵元5社が伝統の技術を合わせ、品質の向上に応えるため理想の醸造を目指し指宿酒造を創業。

From the company's own site

How this house works

Counted from the bottles below, not written about the company.

Koji

white, black and yellow koji all appear across these bottles, which is usually where the difference between them starts. Running all three is uncommon here.

Strength

Every one that publishes a strength is 25 percent. Most houses here spread their bottles across a range; this one does not.

Common to most of them

umami, rich, sweet, smooth and clean, each recorded on at least half of these bottles.

What they distil

4 bottles here, every one of them imo (sweet potato).