Tsukudani (simmered kombu)
Average retail price
- Cheapest surveyed city
- ¥2,191 Akita
- Priciest surveyed city
- ¥3,983 Takamatsu
Retail price survey conducted by the Statistics Bureau of Japan. This is a survey average, not a shop price — actual prices vary by store. 総務省統計局 小売物価統計調査 · Surveyed items and specifications
Key facts
Tsukudani (simmered kombu) costs ¥3,154 per kg in Japan as of August 2026 — the unweighted average of 81 surveyed cities, up 0.9% from a year earlier. Measured as an index, the official CPI for tsukudani (simmered kombu) reads 138.5 (2020 = 100) in August 2026, up 0.7% year on year and up 31.3% over five years.
Tsukudani (simmered kombu) sits in the food group of Japan's CPI basket, with 680 monthly observations from January 1970 to August 2026. The series peaked at 139.7 in December 2025 and bottomed at 10.6 in January 1970; the latest reading is -0.9% against that peak. Against ten years ago it is +44.3%.
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 95.1 | +0.4% | 12 |
| 2016 | 96.0 | +0.9% | 12 |
| 2017 | 96.0 | 0.0% | 12 |
| 2018 | 96.8 | +0.8% | 12 |
| 2019 | 97.5 | +0.7% | 12 |
| 2020 | 100.0 | +2.6% | 12 |
| 2021 | 104.6 | +4.6% | 12 |
| 2022 | 107.5 | +2.8% | 12 |
| 2023 | 116.5 | +8.4% | 12 |
| 2024 | 120.1 | +3.1% | 12 |
| 2025 | 133.3 | +11.0% | 12 |
| 2026 | 138.4 | +3.8% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Average retail price by month
| 2026-08 | ¥3,154 |
|---|---|
| 2026-07 | ¥3,138 |
| 2026-06 | ¥3,144 |
| 2026-05 | ¥3,161 |
| 2026-04 | ¥3,119 |
| 2026-03 | ¥3,149 |
| 2026-02 | ¥3,135 |
| 2026-01 | ¥3,114 |
| 2025-12 | ¥3,160 |
| 2025-11 | ¥3,151 |
| 2025-10 | ¥3,043 |
| 2025-09 | ¥3,054 |
| 2025-08 | ¥3,125 |
Frequently asked questions
- How much does tsukudani (simmered kombu) cost in Japan?
- ¥3,154 per kg, as of August 2026 — the unweighted average of 81 surveyed cities in the government's retail price survey.
- Which Japanese city has the cheapest tsukudani (simmered kombu)?
- Among the surveyed cities in August 2026, Akita was cheapest at ¥2,191 and Takamatsu the most expensive at ¥3,983.
- How much have tsukudani (simmered kombu) prices changed in Japan over the past year?
- As of August 2026, +0.7% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have tsukudani (simmered kombu) prices changed in Japan over the past five years?
- +31.3% compared with the same month five years earlier. The index now reads 138.5.
- When were tsukudani (simmered kombu) prices in Japan at their highest?
- The series peaked at 139.7 in December 2025. The latest reading is -0.9% against that peak.
- What is the difference between the index and the yen price?
- This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局 消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).