Name: Gyeoja-jang (Korean Mustard Sauce)
Prep time: 15 min
Total time: 15 min
Yield: About 1/2 cup, enough for 6 to 8 servings
Cuisine: Korean
Ingredients: 3 tablespoons Korean mustard powder (gyeoja-garu), sifted if lumpy; 2 tablespoons warm water, 105 to 113 F; 2 tablespoons rice vinegar; 1 tablespoon Korean soy sauce (ganjang); 1 tablespoon sugar; 1/4 teaspoon fine sea salt; 1/2 teaspoon toasted sesame oil, optional; 1 to 2 teaspoons cold water, optional, to loosen; 1/2 teaspoon toasted sesame seeds, lightly crushed, optional

Question 1

How do I bloom Korean mustard powder for gyeoja-jang?

Accepted Answer

Bloom Korean mustard powder by stirring 3 tablespoons gyeoja-garu with 2 tablespoons warm water at 105 to 113 F in a warmed bowl. Cover the thick paste and rest it in a warm spot for 10 minutes before adding vinegar, soy sauce, sugar, and salt.

Question 2

Why is my Korean mustard sauce not spicy?

Accepted Answer

Korean mustard sauce tastes flat when the mustard powder does not bloom properly. Water that is too cool leaves the paste dull, boiling water weakens the sharpness, and vinegar added too early stops the heat from developing. Make a fresh paste with 1 tablespoon mustard powder and 2 teaspoons warm water.

Question 3

Can I use prepared Korean hot mustard paste instead of mustard powder?

Accepted Answer

Yes, use 2 tablespoons prepared Korean hot mustard paste instead of 3 tablespoons Korean mustard powder. Skip the 10-minute bloom, reduce the Korean soy sauce to 2 teaspoons, and taste before adding salt because prepared yeon-gyeoja already contains seasoning and acid.

Question 4

How far ahead can I make gyeoja-jang?

Accepted Answer

Make gyeoja-jang 15 to 30 minutes before serving for the cleanest heat and balanced seasoning. For advance prep, measure the Korean mustard powder and mix the vinegar, soy sauce, sugar, and salt several hours ahead, but keep them separate until close to serving.

Question 5

How long does Korean mustard sauce last in the refrigerator?

Accepted Answer

Store Korean mustard sauce in a covered container in the refrigerator for up to 3 days. The sauce remains usable, but the high nose-clearing heat softens each day. For naengchae, pyeonyuk, boiled seafood, or a special table, make gyeoja-jang fresh.

Question 6

What should I serve with gyeoja-jang?

Accepted Answer

Serve gyeoja-jang with naengchae cold platters, pyeonyuk, boiled beef, boiled pork, boiled seafood, chilled vegetables, or cold noodles. Add 1/2 teaspoon toasted sesame oil for boiled meats, but leave it out for seafood or vegetable platters where clean mustard heat works best.

Culinary Explorer

Gyeoja-jang (Korean Mustard Sauce)

Ingredients

Korean mustard powder (gyeoja-garu)

warm water

rice vinegar

Where cooking meets culture.

Ingredient	Quantity
Korean mustard powder (gyeoja-garu)sifted if lumpy	3 tablespoons
warm water105 to 113 F	2 tablespoons
rice vinegar	2 tablespoons