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Fish and seafood from Korea

Dwemi jeot뒈미젓

Dwemi-jeot, also called yeopsak-jeot, is jeot made from young gizzard shad. No household recipe was found, so it is shown with the general jeotgal method; a 1994 study followed its liquid (yeopsak-aekjeot) for a year.

Fully documentedFish and seafood12 monthsFamily: Jeotgal (Korean salted fermented seafood)

Recipe

No fixed amounts recordedNo recipe amounts were found for dwemi-jeot; the general jeotgal salt rule applies.
Young gizzard shad, whole[nfm-jeoneobam]
SaltNo amount was found for dwemi-jeot
Bone brothAdded to the liquid in the 1994 study[an1994]

Total time across the recorded steps: 12 months

Start
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What changes: Starting material: young gizzard shad, kept whole

Step 1 of 5
Take the young gizzard shad
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
T. halophilus
Lactobacillus sakei

Output: whole young shad.

Flavour
Not documented
Texture
Not documented
Colour
Not documented

Microbes at work in this step

Not documented for this step.

Method

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

At a glance

Dwemi-jeot, also called yeopsak-jeot, is jeot made from young gizzard shad. No household recipe was found, so it is shown with the general jeotgal method; a 1994 study followed its liquid (yeopsak-aekjeot) for a year. Made in 5 steps over 12 months. The longest step, age the liquid for a year, takes 12 months (An Y.J. and Chung H.J. 1994). Tetragenococcus halophilus, T. muriaticus and Lactobacillus sakei, found in myeolchi-jeotgal does most of the fermenting.

Key numbers
Main step12 monthsReported[an1994]Age the liquid for a year
AciditypH 6.4Measured[an1994]Ripen to a liquid

What makes this one different

Dwemi-jeot uses the young gizzard shad whole. Gizzard shad gives three jeot: dwemi-jeot (yeopsak-jeot) from the young fish, jeoneo-sokjeot from the guts, and jeoneo-bamjeot from the stomach alone. Its liquid was once thrown away; the 1994 study tested it as a kimchi seasoning.

Liquid pH (yeopsak-aekjeot)
pH 6.4 at day 20 and 6.5–6.6 after, then about steady, in a one-year study of the liquid
Amino nitrogen (yeopsak-aekjeot)
Rose from 352.5 mg% at day 20 to 851.7 mg% after one year as protein broke down
Free amino acids (yeopsak-aekjeot)
1158.2 mg% at day 20 to 2651.5 mg% at one year; glutamic acid, lysine and phenylalanine lead by the end

Related ferments

Safety

Under the Korean Food Code, jeotgal must not be bulked up with added water or brine, and sorbic acid (up to 1.0 g/kg) is allowed only in jeotgal with 8 % salt or less.

History and sources

Every number is labelled with how it is known. How this atlas is made

History
The sources we found do not record its history.
Starter
The sources we found do not say how its fermentation begins.
  1. [mfds-code] Ministry of Food and Drug Safety, Korean Food Code (식품공전), 5. Standards by food, 20-2 jeotgal (젓갈류)spec
  2. [nfm-jeoneobam] Seo H.S., Jeoneo-bamjeot (전어밤젓), National Folk Museum of Korea, Encyclopedia of Korean Folk Culture: Korean Food, Clothing and Housing (한국의식주생활사전)book
  3. [lee2018] Lee Y., Cho Y., Kim E., Kim H.-J., Kim H.-Y. 2018, Identification of lactic acid bacteria in galchi- and myeolchi-jeotgal by 16S rRNA sequencing, MALDI TOF mass spectrometry, and PCR-DGGE, Journal of Microbiology and Biotechnology 28(7):1112-1121, doi:10.4014/jmb.1803.03034 (abstract)paper
  4. [an1994] An Y.J. and Chung H.J. 1994, Changes of component of the fermented youbsak sauce during fermentation (엽삭액젓 숙성중의 성분변화), J. Korean Soc. Food Culture 9(4):395-400 (abstract)paper