Goguma Gonggalppang Recipe: Everything You Need to Know About This Iconic Korean Dish

🇰🇷 The recipe below is based on official Korean MFDS (Ministry of Food and Drug Safety) data.

This guide is based on official MFDS (Ministry of Food and Drug Safety) data, ensuring an authentic and reliable culinary experience. If you’re looking to master the unique Korean bakery delight, Goguma Gonggalppang (Sweet Potato Hollow Bread), you’ve come to the right place. This post will walk you through how to make Goguma Gonggalppang, a crispy, air-filled bread with a delicate sweet potato filling, beloved for its surprising texture and comforting flavor. You’ll learn the precise steps and techniques to recreate this traditional treat at home, from kneading the dough to achieving that perfect hollow interior.

### Ingredients

This recipe yields approximately 8-10 pieces of Goguma Gonggalppang.

**For the Dough:**
* Strong flour: 300g (All-purpose flour can be substituted, but strong flour yields better chewiness)
* Dry yeast: 6g
* Salt: 4g
* Unsalted butter, softened: 10g
* Lukewarm water (35-40°C): 170ml

**For the Sweet Potato Filling:**
* Sweet potatoes (Goguma), medium: 3-4 pieces (approx. 500g), peeled and steamed
* Milk: 20g (whole milk or a non-dairy alternative)

### Nutrition

Based on official MFDS (Ministry of Food and Drug Safety) data, one serving (approx. 100g) of Goguma Gonggalppang contains:
* Calories: 277 kcal
* Carbohydrates: 55g
* Protein: 7g
* Fat: 3g
* Sodium: 150mg
* Dietary Fiber: 4g

### Cooking Steps

1. **Prepare the Dough:** In a large bowl, combine strong flour, yeast, and salt. Gradually add lukewarm water and softened butter. Knead the mixture for 10-15 minutes until it forms a smooth, elastic dough. Place the dough in a lightly oiled bowl, cover with plastic wrap, and let it rise in a warm place for about 1 hour, or until doubled in size.
2. **Make the Sweet Potato Filling:** While the dough rises, steam or boil the peeled sweet potatoes until very tender. Mash them thoroughly with a fork or potato masher. Add milk and mix until smooth. The consistency should be like a thick paste. Set aside to cool.
3. **Shape the Bread:** Once the dough has risen, gently punch it down to release the air. Divide the dough into 8-10 equal portions. Take one portion and flatten it into a disc. Place a spoonful of the sweet potato filling in the center. Carefully gather the edges of the dough around the filling and pinch them together to seal, forming a ball. Roll it gently to ensure a smooth surface.

4. **Second Rise:** Arrange the filled dough balls on a baking sheet lined with parchment paper, leaving space between each. Cover them loosely with plastic wrap or a clean towel and let them rise again for another 30 minutes in a warm place.
5. **Bake:** Preheat your oven to 190°C (375°F). Before baking, gently flatten each dough ball slightly with your palm. This helps achieve the “hollow” effect. Bake for 12-15 minutes, or until the bread puffs up significantly and turns a golden brown. The hollow interior forms as the steam expands rapidly inside the dough during baking.

6. **Cool and Serve:** Remove the Goguma Gonggalppang from the oven and let them cool on a wire rack. They will deflate slightly as they cool, which is normal for their signature hollow structure.

### Mom’s Tips for Perfect Gonggalppang

* **Dough Consistency is Key:** The dough should be soft but not sticky. If it’s too wet, add a tiny bit more flour; if too dry, a few drops of water. Proper kneading is crucial for elasticity.
* **Sweet Potato Texture:** Ensure your sweet potato filling is mashed completely smooth without lumps. Lumps can disrupt the dough’s structure and prevent a perfect puff.
* **Don’t Overfill:** While tempting, overfilling the bread with sweet potato can make it harder for the dough to puff up and create its characteristic hollow space. A tablespoon is usually sufficient.

### History of Gonggalppang

Gonggalppang, which translates to “Hollow Bread” or “Empty Bread,” is a traditional Korean bread known for its unique balloon-like shape and crispy shell. Originating from Chinese-Korean bakeries, it was traditionally made without a filling, hence the name. The addition of Goguma (sweet potato) is a popular modern twist, blending the traditional crispy texture with a beloved Korean ingredient, making it a sweet and satisfying snack. It embodies a fusion of simple bakery techniques with local flavors.

### FAQ

**Q: Why is my Goguma Gonggalppang not puffing up?**
A: Common reasons include insufficient kneading (not enough gluten development), under-proofing the dough, or the oven temperature not being hot enough to create a quick burst of steam that causes the puff. Ensure your yeast is active and the dough rises well in a warm environment.

**Q: Can I prepare the sweet potato filling in advance?**
A: Yes, you can prepare the sweet potato filling a day in advance and store it in an airtight container in the refrigerator. Bring it to room temperature before using for easier handling.

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