Saeu-jeot (Salted Shrimp)

Ingredients

Equipment Needed

• •Digital kitchen scale
• •Fine-mesh sieve
• •Cold stainless mixing bowl
• •1.5-liter glass jar or small onggi with a loose lid
• •Clean spoon or small fermentation weight

Instructions

1. 1

   Clean the vessel

   Wash a 1.5-liter glass jar and lid well, then boil the jar for 10 minutes or run it through a sanitize cycle and let it dry completely. If you use onggi (Korean earthenware), use one already kept for fermenting, scrub it clean, and dry it fully. Saeu-jeot gives no kindness to dirty tools, because there is no cooking step later to forgive you.

2. 2

   Sort and weigh

   Keep the shrimp over ice while you work. Pick out bits of fish, shells, seaweed, blackened shrimp, or anything mushy. Weigh the shrimp after sorting, because the salt is measured against the clean drained weight. For 1kg shrimp, use 250g salt for mixing. If you have 800g shrimp, use 200g salt. This is not to taste.

   Do not make saeu-jeot with chopped large shrimp. Tiny jeot-saeu have the shell, flesh, and enzyme balance this ferment needs.
3. 3

   Rinse in brine

   Dissolve 30g sea salt in 1 liter cold water. Swish the shrimp in this 3 percent brine for 10 seconds, then drain in a fine sieve set over a bowl of ice for 15 minutes. Do not rinse in plain fresh water. It pulls flavor from the shrimp and leaves extra water that weakens the ferment.

4. 4

   Salt by weight

   Put the drained shrimp in a cold stainless bowl and scatter over 250g coarse Korean sea salt. Toss gently with a gloved hand or clean spoon until every shrimp is coated and the salt is evenly distributed. This 25 percent salt level is the guardrail. Less salt may taste easier at first, but it makes a weaker, riskier ferment.

5. 5

   Pack the jar

   Spoon the salted shrimp into the clean jar, pressing gently to remove large air pockets without crushing the shrimp. Pour in any liquid from the bowl. Leave at least 2.5 cm headspace, then scatter the remaining 50g salt evenly across the surface as a cap. The cap draws brine upward and protects the top while the shrimp begin to settle.

6. 6

   Start the brine

   Set the jar on a tray with the lid loosely closed and keep it at 18 to 20 C for 24 hours, just long enough for the shrimp to release brine. After 24 hours, the shrimp should be covered. If they are not, dissolve 25g sea salt in 100g boiled and cooled water and add only enough to cover the surface. Never add plain water.

   If your room is hotter than 22 C, skip the counter and put the jar straight into the refrigerator. The brine will draw more slowly, but the ferment will be cleaner.
7. 7

   Mature it cold

   Move the jar to a refrigerator or kimchi refrigerator at 0 to 4 C and mature it for 8 to 12 weeks. Once a week for the first month, open it with clean hands, press the shrimp back under the brine with a clean spoon, and wipe the rim. It is usable for kimchi after about 8 weeks and rounder after 12. Good saeu-jeot smells salty, clean, and deeply marine. If you see fuzzy mold, heavy gas pressure, black slime, or smell rot or ammonia, throw it away without tasting.

8. 8

   Store and use

   Stir once from the bottom before using, then transfer a small amount to a working jar so the main batch stays clean. Always use a clean dry spoon. Keep the shrimp submerged in brine and refrigerated. Use within 6 months for best flavor, or up to 1 year if it stays cold, clean, and fully covered.

Chef Tips

• •Buy the shrimp the day they are caught if you can. They should be tiny, whole, cold, and clean-smelling. If your market only has ordinary prawns or tired shrimp, buy good commercial saeu-jeot instead of making a poor jar.
• •Salt by weight, not by cup. Coarse Korean sea salt varies wildly in volume, and damp salt packs heavier than dry salt. A scale is not fussiness here. It is the difference between a preserve and a spoiled bowl.
• •Yukjeot from June is the prized one for bossam and special kimchi. Chujeot from autumn is smaller and common for kimjang. A home batch from the shrimp your market actually has is fine, but label it honestly in your own kitchen.
• •For a bossam dip, mince 1 tablespoon mature saeu-jeot with 1 teaspoon of its brine, 1/2 teaspoon gochugaru (Korean chili flakes), 1 teaspoon minced scallion, and 1/4 teaspoon toasted sesame oil. Taste before adding anything salty to the pork.

Advance Preparation

• •Make saeu-jeot at least 8 weeks before you need it for kimjang. Twelve weeks gives a deeper, rounder seasoning.
• •Sterilize the jar the day before if needed, but salt and pack the shrimp the same day you buy them. Freshness cannot wait for your schedule.
• •Once mature, divide some into a small working jar and keep the main jar closed and cold. This protects the batch from repeated spoons and warm air.

Frequently Asked Questions

Nutrition Information

1 serving (about 15g)