Spicy Japchae

A chili oil upgrade for your favorite Korean noodle dish.

Sweet potato glass noodles tossed in a fiery olive oil-based chili crisp with sautéed veggies and marinated shrimp—Japchae, but make it spicy.

I love a good chili crisp, but when Hot Crispy Oil showed up on my doorstep, I wasn’t expecting to fall this hard. Unlike traditional seed-oil-based versions, this one uses olive oil—which couldn’t have come at a better time, considering my LDL levels are acting out for the first time ever

Naturally, I had to throw it into noodles. And not just any noodles—Japchae, the sweet potato noodle stir-fry that’s equal parts glossy, bouncy, and totally adaptable. This spicy twist is exactly what I needed to clean out the veggie drawer and make peace with my bloodwork. Bonus: I even marinated the shrimp in the oil. Game. Changer.

This is the kind of weeknight meal that’s flexible, flavorful, and forgivingly spicy. Add more chili oil if you’re brave. Eat it cold or warm. Let it sit and get better over time. It’s Japchae—but with a little heat, a little better for your heart, and absolutely delicious.

Why this Recipe Works

• Chili oil with olive oil instead of seed oil—LDL-friendly without sacrificing flavor

• Marinated shrimp adds juicy, spicy protein that caramelizes beautifully

• Blanched veggies sautéed separately for perfect texture in every bite

• Hot noodles tossed in the sauce so they soak it all in while glossy and warm

• Flexible make-ahead recipe that tastes even better after resting

Tips for Making Spicy Japchae

• Sauté each veg separately – This keeps everything crisp, bright, and not mushy

• Don’t rinse the noodles – Starch helps soak up all that umami sauce

• Taste and tweak – Let it rest and add more oil, soy, or sugar to taste

• Use olive-oil-based chili crisps if you’re watching your heart health

• Make it meatless – Omit shrimp or sub with tofu for a vegetarian version

• Meal prep friendly – Makes great leftovers and serves cold or room temp

🌱 A Greener Bite of Sustainability

By skipping processed seed oils and reaching for a chili crisp made with olive oil, you’re making a heart-healthier, whole-foods-forward choice. Plus, Japchae is the perfect way to use up odds and ends in your veggie drawer—nothing wasted, everything celebrated.

Ingredients & Why They Matter

• Korean sweet potato noodles (dangmyeon) – Chewy, bouncy glass noodles that hold sauce beautifully

• Shrimp – Adds protein and picks up flavor from the marinade

• Hot Crispy Oil – Made with olive oil, fried garlic/shallots, chili flakes, and spices; brings heat and umami

• Spinach – Blanched and seasoned for an earthy, tender green

• Carrots, bell peppers, onions, scallions, oyster mushrooms – Sautéed separately for maximum color and texture

• Soy sauce, sesame oil, sugar – The Japchae flavor base: salty, nutty, sweet

• Dasida (optional) – Adds a punch of savory depth (use mushroom powder if avoiding MSG)

• Sesame seeds – Nutty garnish that brings crunch and richness

How To Make Spicy Japchae

A spicy twist on classic Korean Japchae, made with shrimp, sautéed vegetables, and Hot Crispy Oil for a flavorful kick. Healthy, vibrant, and seed-oil free.

Marinate the Shrimp:

In a bowl, mix: 1 lb shrimp, 1 tbsp Hot Crispy Oil, 1 tsp soy sauce, and 1 tsp sesame oil. Set aside to absorb the spicy magic.

Blanch the Spinach and Mushrooms:

• Boil water with 1 tsp salt. Blanch spinach ~15 seconds, shock in cold water, squeeze dry, snip into 3” lengths. Season with ¼ tsp salt, 1 tsp sesame oil, and a pinch of dasida (optional).

• Blanch mushrooms ~40 seconds, rinse in cold water, squeeze dry. Set aside.

Sauté the Veggies (One at a Time):

In a large pan:

• Carrots – Sauté till tender-crisp. Season with salt, sugar, pepper, dasida.

• Bell Peppers & Onions – Sauté until softened. Season similarly.

• Mushrooms & Scallions – Finish together in the pan.

Cook the Shrimp:

Sear shrimp over medium-high until pink and lightly caramelized, ~2–3 mins. Set aside.

Boil and Season the Noodles:

Boil noodles ~6–7 min until chewy. Do not rinse. While hot, toss noodles with: 4 tbsp soy sauce, 2 tbsp sugar, 2 tbsp sesame oil, and 2 tbsp Hot Crispy Oil.

Final Toss and Seasoning:

In a large bowl or wok, combine: Noodles, All veggies, Shrimp, and Spinach.

Toss with: 1 tbsp soy sauce, 1 tbsp sugar, 1 tsp dasida or mushroom powder, ½ tsp pink salt, Black pepper to taste, and ¼ cup roasted sesame seeds Let sit 20–30 minutes for flavors to marry. Drizzle with extra Hot Crispy Oil before serving for that glossy glow.

Spicy and Slurp-Worthy

This Spicy Japchae is the full package—bold in flavor, glossy from sesame oil and chili crisp, and loaded with bouncy noodles and juicy shrimp. Whether you’re easing off seed oils or just love a fiery noodle stir-fry, this dish delivers big on comfort and kick. If you make it, tag me on Instagram @the.sustainable.kitchen—I want to see that shine.