Dotori Muk: Korean Acorn Jelly

Acorn jelly (Dotori Muk, 도토리묵) is a old-style Korean side dish known for its smooth, jiggly texture and mild, nutty flavor. Made from acorn starch, it’s naturally gluten-free and often served chilled—with a bold dipping sauce or tossed into a refreshing salad.

Have you ever eaten acorns? In Korea, we do—sort of. We turn them into dotori muk, or acorn jelly—a cool, jiggly dish that’s light, earthy, and surprisingly addictive.

We grew up eating dotori muk during the warm seasons or after a long hike in the mountains. It’s a classic post-hike treat in Korea—many little trail-side restaurants serve it chilled with crispy pajeon (Korean scallion pancake) and a bowl of makgeolli (Korean rice wine), which many folks enjoy to relax and refuel.

Now, don’t worry—you won’t need to forage for acorns or wait for them to fall from the trees to make this at home. These days, acorn jelly powder is direct to find at Korean grocery stores, and it takes just a few unfussy steps to turn it into that signature soft, bouncy jelly.

In this post, we'll show you how to make dotori muk at home and how to dress it up into a refreshing salad that brings out all its subtle charm. It’s the kind of side dish that’s light but satisfying—steady for balancing out a hearty Korean meal or adding something new to your table.

Acorn Flour (Acorn Starch)

Acorn flour—also called acorn starch—is made by grinding and processing acorns, then carefully removing their natural bitterness through repeated soaking and drying. In Korean cooking, this ingredient is known for its earthy flavor and jelly-like properties.

Unlike wheat flour or cornstarch, acorn flour doesn’t thicken sauces. Instead, when cooked with water and cooled, it sets into a firm, bouncy jelly (dotori muk). It’s naturally gluten-free, low in calories, and acts as a steady base for bold Korean seasonings like soy sauce, garlic, and sesame oil.

It’s one of those ingredients that looks plain—but transforms completely when you cook it. You can find it labeled as 도토리묵가루 (dotori muk garu) at most Korean grocery stores or online.

How the dish comes together

Cook. Whisk acorn jelly powder into water and bring it to a gentle boil. As it darkens and thickens, reduce the heat and keep whisking—this is key to a smooth, lump-free jelly.

Finish. When it reaches a glossy, pudding-like texture, stir in a splash of sesame oil for a subtle nutty aroma and silky finish.

Set. Pour the mixture into a square container and refrigerate overnight until firm. Slice into bite-sized pieces with a fluted cutter for extra flair—or just use a knife and keep it unfussy.

How to Serve Dotori Muk (Acorn Jelly)

Dotori muk is mild on its own, but it shines when paired with bold Korean sauces and dressings. Here are two unfussy and savory ways to enjoy it—whether you’re keeping things minimal or making a refreshing salad.

Plain acorn jelly (dotori-muk) drizzled with spicy sauce. Acorn jelly slices tossed in tangy dressing with salad greens.

1. Pain with Sauce

For a classic side dish, slice the jelly and drizzle it with a savory Korean sauce. All you need is a short mix of gochugaru (Korean red pepper flakes), soy sauce, garlic, sesame oil, and sesame seeds. The soft texture soaks up the flavor beautifully—unfussy and satisfying.

2. Dotori Muk Muchim (Acorn Jelly Salad)

This version adds fresh greens and crunchy vegetables for a bright, refreshing contrast. Toss sliced jelly with lettuce, perilla leaves (kkaennip), cucumber, and carrot. Then, pour over a tangy Korean dressing and gently mix. The colors pop, the textures play together—and every bite is light yet packed with flavor.

Acorn Jelly Success Tips

A few small tricks can make a big difference when it comes to smooth, silky acorn jelly. Here’s what we've learned from making it many times at home:

1. Stir in One Direction: We used to stir back and forth without thinking—big mistake. The jelly turned out with lots of air pockets! Now we always stir in one direction while it boils, which helps create a smoother, bubble-free texture.
2. Use a Square or Rectangular Container: For even, clean slices, pour the jelly into a square or rectangular container. Round containers make for oddly shaped pieces—and don’t forget to lightly grease the container for easier release.
3. Cover While Cooling: Place plastic wrap directly on the surface while the jelly cools to prevent it from drying out or forming a skin.
4. Use a Fluted Cutter (Optional): Want to get fancy? A fluted cutter makes pretty slices and helps the sauce cling better. Totally optional, but a nice touch for presentation.
5. Store Leftovers Properly: Keep extra jelly in an airtight container in the fridge. It stays fresh for up to a week.

📌 If you’re a fan of this jelly-like dish, try our mung bean jelly salad recipe (muk-mchim), made with mung bean starch and seasoned with a different blend of ingredients. If you love light, plant-based banchan, check out more in our Korean Cuisine collection.

• Yield: 4 people
• Cook: 15 minutes

Ingredients

• 1 cup (120 g) acorn flour
• 5 1/2 cups (1.3 liter) water
• 1/2 tsp salt
• 2 tsp sesame oil, or perilla oil

For spicy topping sauce

• 1 tbsp Korean chili flakes (gochugaru)
• 2 tbsp soy sauce
• 1/2 tbsp minced garlic
• 1 tbsp sesame oil, or perilla oil
• 1 tbsp toasted sesame seeds

For acorn jelly salad

• 1 handful each various salad greens, perilla leaves, cucumber, and carrot, or your preferred choice
• 1-1/2 tbsp Korean chili flakes (gochugaru)
• 1-1/2 tbsp soy sauce
• 1 tbsp rice vinegar
• 1/2 tbsp sugar
• 1 tbsp toasted sesame seeds

Method

1. Brush a 1-1/2 qt size square container with oil and set aside.
2. Combine acorn jelly flour, salt, and water in a large pot. Whisk the mixture thoroughly and heat it over medium-high heat, continuing to whisk as it warms up.
3. As the mixture heats, it will darken, and large bubbles will begin to form. Lower the heat to simmer and cook for 5–6 minutes, stirring constantly to prevent the mixture from sticking.
4. Once the jelly has thickened and reduced, add 2 teaspoon sesame oil. Stir well to incorporate the oil for a smooth and flavorful finish.
5. Pour the jelly into the prepared container and smooth the surface. Cover it with plastic wrap to prevent drying, then let it cool to room temperature. Once cooled, place it in the refrigerator to set overnight.
6. When the jelly is ready, turn it out onto a cutting board and slice it into 3/8-inch thick pieces. Use a fluted cutter for a decorative look or a regular knife for simplicity. Serve and enjoy!
7. Combine all the topping sauce ingredients in a bowl, then drizzle the sauce over the acorn jelly slices. Serve chilled.
8. To make the dressing, whisk together gochugaru, soy sauce, vinegar, sugar, and sesame seeds in a small mixing bowl until well combined.
9. To make the salad, start by tossing the salad greens and veggies with half of the dressing in a large mixing bowl. Next, gently add the acorn jelly slices and drizzle the remaining dressing over the top. Lightly toss everything together, being careful not to break the delicate jelly. Serve the salad immediately!

Notes

Recipe Tips

Stir in one direction while cooking the jelly to avoid air bubbles and create a smoother texture.

Use a square or rectangular container for clean, uniform slices. Lightly grease it for direct release.

Cover the surface with plastic wrap while cooling to prevent it from drying out.

A fluted cutter adds style and helps the sauce cling better—but a regular knife works just fine.

Store leftovers in an airtight container in the fridge for up to 1 week.