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Fish and seafood from Korea, Chungcheongnam-do: Seosan, Dangjin, Yesan and above all Ganwoldo
Eorigul-jeot is oyster jeot made with little salt ("eori" means lightly salted) and seasoned with chilli powder. On Ganwoldo the oysters are salted until a clear liquid gathers, then mixed with chilli powder steeped in flour paste or rice water and eaten after about 10 days. Because it is lightly salted it does not keep long and is eaten once ripe.
| Fresh oysters | Rinsed many times in seawater in a bamboo basket, not in fresh water, so the bits of shell come off[encykorea-eorigul] |
| Salt | A little: enough to make the oysters salty; no amount given[encykorea-eorigul][nfm-eorigul] |
| Sun-dried chilli powder | [encykorea-eorigul] |
| Thin flour paste or boiled and cooled rice water | [encykorea-eorigul] |
Total time across the recorded steps: 3.1 days – 10 days
What changes: The oysters are shaken clean in seawater in a bamboo basket
The oysters are shaken in a bamboo basket in seawater several times; rinsing often in fresh water is avoided.
Microbes at work in this step
Not documented for this step.
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
Eorigul-jeot is oyster jeot made with little salt ("eori" means lightly salted) and seasoned with chilli powder. On Ganwoldo the oysters are salted until a clear liquid gathers, then mixed with chilli powder steeped in flour paste or rice water and eaten after about 10 days. Because it is lightly salted it does not keep long and is eaten once ripe. Made in 4 steps over 3.1 days – 10 days. The longest step, mix and ripen, takes 3–10 days (Seo H.K. (서혜경) 1995 (revised 2023)) and runs at 4–15 °C (So J.-W. and Park K.-S. 2026). Salt is 3–5 % (So J.-W. and Park K.-S. 2026). Lactic acid bacteria of the family Lactobacillaceae, over 90 % of the bacteria after 6 days at 15 °C, 12 days at 10 °C and 30 days at 4 °C; Weissella, Latilactobacillus, Companilactobacillus and Lactiplantibacillus at 15 °C, Latilactobacillus alone at 10 °C and 4 °C does most of the fermenting.
| Main step | 3–10 daysReported[encykorea-eorigul][nfm-eorigul] | Mix and ripen |
|---|---|---|
| Temperature | 4–15 °CReported[so2026] | Mix and ripen |
| Salt | 3–5 %Reported[so2026] | Salt lightly |
Eorigul-jeot uses little salt and chilli powder, and ripens in days; plain guljeot is oysters in salt alone, ripened long.
Low salt means it does not keep: it is eaten soon after it ripens, and makers advise keeping it chilled or frozen (So et al. 2024). The oysters are raw and never cooked. CDC says most people get vibriosis from raw or undercooked shellfish, particularly oysters, and liver disease, cancer, diabetes, HIV or immune-suppressing treatment raise the risk of severe illness. Shop jars held only 1.92–4.74 % salt at pH 5.07–6.06. FDA's general seafood table has Clostridium botulinum type E growing up to 5 % water-phase salt, above pH 5 and from 3.3 °C, and type A up to 10 % salt above pH 4.6, so this salt and acid alone would not stop botulism, though neither Korean study we read tested for it. One lab study, with one batch at each temperature, judged 4 °C the best of 15, 10 and 4 °C for stable quality (So and Park 2026), and we found no study of a safe home method. Do not ripen it at room temperature under a tight cover. Of ten commercial jars tested in Korea, two held Bacillus cereus and Clostridium perfringens at very low counts, one held faecal coliforms and none held Vibrio parahaemolyticus, so the authors call for monitoring of the product (So et al. 2024).
Hazards the sources name: Bacillus cereus and Clostridium perfringens, found in 2 of 10 commercial eorigul-jeot; faecal coliforms in 1 of 10.
Every number is labelled with how it is known. How this atlas is made
Ganwoldo villagers tell that the monk Muhak sent it to King Taejo, but no written record confirms this. In 1986 it was one of eight specialities chosen for Korea Post's first mail-order scheme. A 1973 newspaper recipe made plain guljeot of oysters and salt and turned it into eori-guljeot with spring onion, garlic, ginger and chilli powder.
