Introduction

Deodeok-gui sauce (더덕구이 양념) is the sticky, sweet-spicy gochujang glaze used for deodeok-gui – grilled deodeok root. Deodeok (bonnet bellflower root, sometimes called “mountain root”) is a wild-tasting, aromatic root that Koreans have long prized as a mountain vegetable. Pounded flat, brushed with the glaze and grilled, it becomes chewy and almost meaty, which is why deodeok-gui is a favorite at temple-food and mountain restaurants. The glaze is related to our gochujang gui sauce but is made in two steps to suit the delicate root.

Deodeok-gui Sauce at a Glance

What it is

• A sweet, spicy gochujang glaze for grilled deodeok and other roots

Main ingredients

• Gochujang, rice syrup or sugar, soy sauce, garlic, scallion, sesame oil, sesame seeds (plus a sesame oil–soy pre-coat)

Taste

• Sweet, mildly spicy and smoky, balancing deodeok’s slight bitterness

Main uses

• Deodeok-gui, hwangtae-gui (grilled dried pollack), grilled king oyster mushrooms, grilled tofu

What is Deodeok-gui Sauce Made Of?

Deodeok is first brushed with yu-jang – a thin mix of sesame oil and soy sauce – and grilled briefly so it doesn’t burn. Then the thick gochujang glaze goes on for a second, quick grill. The glaze is gochujang sweetened with jocheong (rice syrup) or sugar, seasoned with soy sauce, garlic, scallion and sesame. Variations:

• Spicy gochujang glaze: the classic red version.
• Soy glaze (ganjang deodeok-gui): soy sauce, sugar and sesame oil only, for a non-spicy option.
• Temple-food style: no garlic or scallion, following Korean Buddhist cooking traditions.
• Hwangtae-gui: the same glaze on rehydrated dried pollack (see our bugeo guide).

What Does Deodeok-gui Sauce Taste Like?

The glaze is sweet, savory and gently spicy, with toasty sesame and a light char from the grill. Deodeok itself is earthy, aromatic and faintly bitter, with a texture often compared to chewy meat when flattened. Together, the sweet glaze tames the bitterness while the root’s woodsy aroma comes through.

Popular Korean Dishes That Use Deodeok-gui Sauce

Deodeok-gui

Flattened grilled deodeok with gochujang glaze. Recipe below.

Hwangtae-gui

Grilled dried pollack with the same glaze, a classic drinking snack.

Saesongi-gui

Thick slices of king oyster mushroom grilled with the glaze – a great substitute if you can’t find deodeok.

Deodeok Muchim

Shredded raw deodeok tossed with a similar sweet-spicy dressing.

Easy Deodeok-gui Recipe (Serves 2–3)

Ingredients

• 7 oz (200 g) fresh deodeok (or 2 large king oyster mushrooms)
• Salted water (2 cups water + 1 tsp salt) for soaking

Yu-jang pre-coat

• 1 tbsp sesame oil and 1 tsp soy sauce

Deodeok-gui sauce

• 2 tbsp gochujang
• 1 tbsp rice syrup (or 2 tsp sugar)
• 1 tsp soy sauce and 1/2 tsp gochugaru
• 1 tsp minced garlic and 1 tbsp finely chopped scallion
• 1 tsp sesame oil and 1 tsp toasted sesame seeds

Instructions

1. Scrub the deodeok and peel it by turning a small knife around the root (wear gloves – the white sap is sticky). Halve lengthwise if thick.
2. Soak the roots in the salted water for 10–20 minutes to reduce bitterness, then pat dry.
3. Place each piece between plastic wrap and gently pound with a rolling pin or meat mallet until flat and fanned out, without tearing.
4. Brush with the yu-jang pre-coat and cook in a lightly oiled pan over medium-low heat for 1–2 minutes per side.
5. Mix the sauce ingredients, brush a thin layer on both sides and cook over low heat for another 1–2 minutes per side, until glossy and lightly charred. Watch carefully – the sugar burns quickly. Sprinkle with sesame seeds and serve.

Tip: The two-step method matters: grilling with the oil–soy coat first cooks the root through, so the gochujang glaze only needs a minute to caramelize instead of scorching.

Where to Buy Deodeok and Deodeok-gui Sauce Ingredients

United States

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Amazon
Search gochujang on Amazon
Search deodeok on Amazon

H-Mart
Search deodeok on H-Mart

Canada

Search gochujang on Amazon.ca

Europe

Search gochujang on Amazon.co.uk

How to Store Deodeok and the Sauce

Wrap unpeeled fresh deodeok in newspaper or paper towels and keep it in the vegetable drawer for about 1–2 weeks. Peeled, flattened deodeok can be frozen in portions for a month. The glaze keeps in a sealed jar in the fridge for up to 2 weeks. Cooked deodeok-gui is best eaten fresh but can be refrigerated for 2 days and reheated in a pan.

Deodeok-gui FAQ

What is deodeok in English?

It is the root of Codonopsis lanceolata, often called bonnet bellflower root or lance asiabell.

What does deodeok taste like?

Earthy, aromatic and slightly bitter, with a chewy texture when cooked.

What can I use instead of deodeok?

King oyster mushrooms, burdock root or doraji (bellflower root) work well with the same glaze.

Why pound deodeok before grilling?

Flattening softens the fibers, helps it cook evenly and gives more surface for the glaze.

Conclusion

Deodeok-gui sauce turns a humble mountain root into a smoky, sweet-spicy side dish worthy of a feast. Learn the two-step glaze once and you can use it on mushrooms, tofu and dried pollack too. For more about the base paste, read our gochujang guide.