Gamja-mandu (Gangwon Potato Dumplings)

Ingredients

Equipment Needed

• •Box grater with fine holes or food processor
• •Clean cotton cloth or fine cheesecloth
• •Large mixing bowls
• •Steamer basket with lid
• •Parchment with holes, damp cotton liner, or cabbage leaves

Instructions

1. 1

   Salt the cabbage

   Put the chopped napa cabbage in a bowl with 1 teaspoon salt and toss well. Let it stand 15 minutes, then squeeze it in your fist until no more water runs freely. This small step keeps the filling from flooding the potato wrapper, and a wet filling is how these dumplings split.

2. 2

   Grate the potatoes

   Grate the peeled potatoes on the fine holes of a box grater into a bowl. Work steadily and do not wander away, because grated potato darkens when it waits. Scrape every bit of pulp from the grater. This wrapper lives from raw potato, not wheat flour, so the texture starts here.

   A food processor can grate the potatoes, but finish by pulsing them finer. Coarse shreds make a rough wrapper that tears instead of stretching.
3. 3

   Settle the starch

   Tip the grated potato into a clean cotton cloth set over a bowl and squeeze very hard. Keep the squeezed pulp in the cloth and let the potato liquid sit undisturbed for 15 minutes. Pour off the brownish water slowly and save the white starch settled at the bottom. That settled starch is not waste. It is the old cook's measure hiding in the bowl.

4. 4

   Make the dough

   Put the squeezed potato pulp in a bowl. Add the settled potato starch, 90g potato starch, and 3/4 teaspoon salt. Knead 2 to 3 minutes until it gathers into a soft, slightly tacky dough that can be pinched without crumbling. If it cracks badly, add boiling water 1 teaspoon at a time, up to 2 tablespoons. Too much water makes paste; just enough makes the potato starch wake up and hold.

   손맛 is real, the hand-taste people trust, but I still measure it. For 900g potatoes, 90g added starch gives a wrapper that is chewy without turning rubbery.
5. 5

   Mix the filling

   In a separate bowl, combine the ground pork, squeezed cabbage, garlic chives, scallions, garlic, soy sauce, sesame oil, 1 tablespoon potato starch, ginger, black pepper, and 1 tablespoon sesame seeds. Mix in one direction for 2 minutes until the pork turns sticky and holds together. That stickiness is structure, not fussiness.

6. 6

   Taste for seasoning

   Cook 1 teaspoon of filling in a small pan or microwave it until fully cooked, then taste it. It should be savory and clean, with chive first and pork behind it. Add a pinch of salt only if it tastes flat. Do not season the raw filling by guesswork when one cooked spoonful tells the truth.

7. 7

   Shape the wrappers

   Dust your hands and board lightly with potato starch. Divide the dough into 24 pieces, about 32g each, and keep them covered with a damp cloth. Flatten one piece into a 9cm round, thicker in the center and thinner at the edge. Potato dough has no wheat gluten to forgive rough handling, so press and pat instead of rolling it hard.

8. 8

   Fill the dumplings

   Place 1 level tablespoon of filling in the center of each wrapper. Fold into a half-moon and pinch the seam firmly, then press the sealed edge once more between thumb and finger. If the dough cracks, patch it with a pea-size bit of dough and smooth it with a damp fingertip. Do not overfill. A modest spoonful cooks evenly and lets the wrapper stay the main point.

9. 9

   Steam the mandu

   Line a steamer with damp cotton cloth, parchment with holes, or cabbage leaves. Arrange the dumplings with space between them and steam over briskly boiling water for 15 to 18 minutes, until the skins turn glossy and near-translucent and the pork is cooked through. Rest them 3 minutes before lifting. Fresh from the steamer, the skins are delicate; give them a moment and they settle into their chew.

10. 10

    Serve with sauce

    Stir together 2 tablespoons soy sauce, 1 tablespoon rice vinegar, 1 teaspoon water, 1/2 teaspoon gochugaru if using, and 1/2 teaspoon sesame seeds. Serve the gamja-mandu warm with the dipping sauce and a few sharp banchan. They are filling food, the kind that asks for kimchi and a quiet table.

Chef Tips

• •Use starchy potatoes, not waxy salad potatoes. Russet-style potatoes give more starch and a cleaner chew; waxy potatoes make a wetter dough and a heavier skin.
• •Keep the filling modest. One level tablespoon looks stingy until you try to seal potato dough around more. This is not a noodle-wrapper mandu. The wrapper is tender before cooking and needs room to close.
• •Garlic chives are best in spring and early summer, when they are tender and sweet. If your market has only tough chives, chop them finer and use 60g instead of 80g. Cook the month you are standing in.
• •A bamboo steamer, metal steamer, or wide pot with a rack all work. The vessel can change. The squeezing and the dough texture cannot.

Advance Preparation

• •The filling can be mixed up to 1 day ahead and refrigerated. Keep it covered and cold, then stir once before using.
• •The potato dough is best made the day you shape the dumplings, because raw grated potato darkens and changes texture as it sits.
• •Shaped uncooked dumplings can be frozen on a starch-dusted tray until firm, then packed in a freezer bag for up to 1 month. Steam from frozen, adding 4 to 6 minutes, and do not thaw first.
• •Cooked dumplings keep 2 days refrigerated. Reheat by steaming 5 to 6 minutes; microwaving makes the potato skin tough.

Frequently Asked Questions

Nutrition Information

1 serving (about 300g)