Toha-jeot (Salted Freshwater Shrimp)

Ingredients

Equipment Needed

• •Digital kitchen scale
• •1-liter glass jar or small onggi with lid
• •Glass fermentation weight or small food-safe bag filled with 25 percent brine
• •Fine-mesh strainer
• •Nonreactive mixing bowl

Instructions

1. 1

   Choose the shrimp

   Use only very fresh toha from a trusted fishmonger or producer who can tell you where the shrimp were harvested. They should smell clean and briny, never sour, muddy, or like ammonia. Keep them cold over ice while you work. No amount of salt repairs bad seafood, and freshwater shrimp from unknown water do not belong in a ferment.

   If you cannot find true toha, buy a good finished toha-jeot instead. Sea shrimp make saeu-jeot, not toha-jeot, and the two have different weight on the Korean table.
2. 2

   Sanitize the jar

   Wash a 1-liter glass jar or small onggi and its weight with hot soapy water, then boil the jar for 10 minutes or run it through a sanitize cycle. Let everything air-dry completely. This is not fussiness. A slow raw seafood ferment gives careless hands time to show themselves.

3. 3

   Rinse in brine

   Dissolve 20g salt in 1 liter chilled boiled water to make a 2 percent brine. Swish the shrimp gently in the brine for 10 seconds, lift them out, and leave any grit behind. Repeat once if needed, then drain in a fine strainer for 20 minutes. Do not soak them and do not rinse under plain tap water, because plain water makes the tiny bodies swell and lose their clean flavor.

4. 4

   Weigh and salt

   Weigh the drained shrimp. For 500g shrimp, measure 125g sea salt. If your shrimp weigh differently, multiply the drained weight by 0.25. Master Seong-nyeo made me weigh after washing, not before, because the water clinging to the shrimp lies. Toss the shrimp gently with about 100g of the salt and keep 25g aside for packing.

5. 5

   Pack the jar

   Sprinkle a little of the reserved salt in the bottom of the jar. Pack in the salted shrimp, pressing lightly to remove air pockets, then scatter the remaining salt over the top as a salt cap. Set a clean fermentation weight over the shrimp so they stay below their own brine as it forms. Leave at least 2 inches of headspace.

   After 12 to 24 hours, the shrimp should be covered by brine. If they are not, add just enough 25 percent brine, 25g salt dissolved in 75g boiled and cooled water, one spoonful at a time. Do not dilute the jar with plain water.
6. 6

   Age it cold

   Put the jar straight into the refrigerator, 2 to 5 degrees C, and age 45 to 60 days. Open it once a week with clean hands and a clean spoon, press the shrimp back under the brine, then close it again. The shrimp will turn from gray and translucent to amber-tan, the brine will deepen, and the smell should be salty, shrimp-rich, and clean. Throw it away if you see fuzzy mold, black spots, a swollen lid, a rotten smell, or a slippery film that is not just brine.

7. 7

   Season a batch

   For the table, measure 1 cup aged toha-jeot with a spoonful of its brine. Stir in the gochugaru, garlic, ginger, maesil-cheong or rice syrup, sesame seeds, scallion, and green chili if using. Let it sit 30 minutes before serving so the chili softens into the brine. Add sesame oil only if the batch will be eaten that day. Seasoning the whole jar makes the aromatics tired before the shrimp is finished.

8. 8

   Serve and store

   Serve toha-jeot in very small spoonfuls with hot rice, bossam, ssam leaves, juk (rice porridge), or a plain bowl that needs salt and depth. The base jar keeps 4 to 6 months refrigerated if the shrimp stay covered and every spoon is clean. The seasoned batch keeps up to 2 weeks refrigerated. This is raw fermented seafood; pregnant people, elderly guests, and anyone immunocompromised should choose a commercially produced jeotgal or eat it cooked into a stew.

Chef Tips

• •Buy toha in season and ask where it came from. Clean-water source matters more here than size, and home salting does not make polluted catch safe.
• •Use salt by weight, never by cup. Coarse Korean sea salt is right for this, but kosher salt can stand in only if you weigh it. Table salt tastes harsh and often carries additives that do no favor to a ferment.
• •Keep the base jar plain. Garlic, scallion, sesame oil, and chili belong in the small batch you serve, not in the long-aging jar. That is how the shrimp stays clean and the seasoning stays bright.
• •A finished toha-jeot should be salty enough that one teaspoon seasons several bites of rice. If you want to eat it by the spoonful, you are asking it to be a different dish.
• •The brine is useful. A few drops can season a dipping sauce, a pot of kimchi-jjigae, or a radish kimchi paste, but taste first because it is stronger than it looks.

Advance Preparation

• •Make the salted shrimp base at least 45 days before you need it. For a special table, 60 days gives a deeper, rounder taste if the jar is kept cold and clean.
• •The rinse brine and sanitized jar can be prepared the night before and chilled, which makes the shrimp handling faster and safer the next morning.
• •Season only the amount you plan to serve within 2 weeks. The unseasoned base keeps much longer because it has no raw aromatics mixed through it.

Frequently Asked Questions

Nutrition Information

1 serving (about 95g)