Arugula (Rucola)

TL;DR: Arugula (루꼴라, rukkola) is a peppery Mediterranean salad green that has become a "must-have" leaf in Korea’s trendy brunch and fusion cafés. Its nutty, bitter bite cuts through rich grilled meats and sweet summer fruit, which is why Korean cooks now scatter it over bulgogi pizza, fold it into modern salads, and crown sizzling hot dishes with it at the last second. Beyond flavor, arugula delivers vitamin K, antioxidants, and glucosinolate compounds studied for anti-inflammatory effects.

What is arugula? Arugula (루꼴라) is a leafy green in the cabbage family with a distinctively peppery, nutty, slightly bitter flavor. Native to the Mediterranean, it is eaten raw in salads and as a finishing herb. In modern Korean cooking it has become a popular garnish and salad base, prized for the way its sharp bite balances rich, sweet, or fatty dishes.

Table of Contents

• What Is Arugula (Rucola)?
• What Does Arugula Taste Like?
• How Is Arugula Used in Korean Cooking?
• How Do You Store Arugula?
• What Can I Substitute for Arugula?
• Nutritional Profile & Health Benefits
• Frequently Asked Questions

Attribute	Value
Korean Name (한글)	루꼴라 (also 루콜라)
Romanization	rukkola
English Common Name	Arugula (rocket, rucola)
Scientific Name	Eruca sativa (syn. Eruca vesicaria subsp. sativa)
Region of Origin	Mediterranean & Western Asia
Peak Season	Spring & autumn (year-round in Korea via greenhouse cultivation)
Storage Method	Refrigerate unwashed in a breathable bag, 3–5 days; do not freeze
Where to Buy	Large Korean marts, H Mart, online grocers, farmers’ markets

What Is Arugula (Rucola)?

Arugula (루꼴라, rukkola) is a fast-growing leafy green in the Brassicaceae (cabbage and mustard) family, the same botanical family as kale, radish, and watercress. Known in Britain as "rocket" and in Italy as "rucola," it carries the scientific name Eruca sativa. Its slender, lobed leaves grow in loose rosettes and are almost always eaten raw to preserve their bright, sharp character.

Native to the Mediterranean basin and Western Asia, arugula has been cultivated since Roman times, when it was valued both as a salad leaf and as a seed crop. In Korea it is a relative newcomer, arriving with the country’s embrace of Western and fusion dining. Today it is a fixture in upscale grocery stores and café kitchens. Korean home cooks increasingly reach for arugula when they want to add a layer of freshness and a touch of bitterness that lettuce simply cannot provide. Its membership in the cruciferous family is also what gives it both its peppery taste and its noteworthy health compounds.

What Does Arugula Taste Like?

Arugula tastes peppery, nutty, and pleasantly bitter, with a mustard-like sharpness that builds as you chew. Young "baby" leaves are milder and more tender, while mature leaves develop an assertive, almost spicy heat. That bite comes directly from glucosinolates — the same sulfur compounds responsible for the kick in mustard, radish, and wasabi.

This sharpness is exactly why arugula has found such a comfortable home in Korean fusion cuisine. Its peppery edge cuts cleanly through richness, so it balances the savory-sweet glaze of bulgogi (불고기) and the fattiness of grilled pork or melted cheese. It also plays beautifully against sweetness: a handful of arugula tossed with watermelon, persimmon, or a citrus dressing creates the kind of bitter-sweet contrast that modern Korean chefs love. Unlike heartier greens, arugula offers flavor without weight, which is why it reads as "elegant" rather than rustic on a plate. The general rule in the kitchen is simple: the more peppery the leaf, the fresher and more potent it is.

How Is Arugula Used in Korean Cooking?

Arugula’s role in Korean cooking is almost entirely a modern, fusion-driven one — it shines as a fresh finishing element rather than a cooked vegetable. Three applications stand out.

1. A last-minute crown for hot dishes. Because arugula’s delicate leaves wilt quickly, Korean cooks add it at the very last moment to warm dishes. A handful scattered over a bubbling ttukbaegi (뚝배기, earthenware pot) of bulgogi, or over a plate of Korean-style cream pasta, adds a vivid green lift and a peppery freshness that survives only if the leaves never truly cook. This pairing of arugula and marinated beef is a signature move in Korea’s contemporary kitchens.

2. Gourmet bulgogi pizza. Korean fusion cafés have made arugula-topped bulgogi pizza a genre of its own. A cheesy base loaded with sweet-savory marinated beef comes out of the oven, and the arugula goes on top while the pizza is still hot, softening just slightly. The contrast — molten cheese, sweet beef, sharp green — is the whole point.

3. A bold modern salad base. In trendy brunch spots, arugula replaces plain lettuce as the foundation of "sophisticated" salads. The yuzu bulgogi salad — peppery leaves, warm sliced beef, and a bright citrus dressing — is a café staple that captures Korea’s fusion sensibility in a single bowl. To explore where this beef component comes from, see our deep dive into Korean beef and its prized cuts.

How Do You Store Arugula?

Arugula is one of the most perishable salad greens, so storage is about slowing moisture loss without trapping condensation. Store it unwashed, loosely wrapped in a paper towel inside a breathable container or perforated bag in the refrigerator’s crisper drawer. Kept this way, it stays crisp for about three to five days. Washing it before storage accelerates sliminess, so rinse only right before using, then spin or pat the leaves thoroughly dry.

Two practical cautions: arugula does not freeze well, since its delicate cell structure turns to mush on thawing, and it should be kept away from ethylene-producing fruits like apples and bananas, which speed up yellowing. If your leaves begin to wilt slightly, a 10-minute soak in ice water can revive much of their crunch. For the best flavor and the highest concentration of beneficial compounds, buy arugula in small quantities and use it quickly rather than stockpiling it.

What Can I Substitute for Arugula?

If you can’t find arugula, the best substitutes match its defining peppery bite. Watercress is the closest swap, offering a similar crisp, mustardy sharpness, while young mustard greens deliver even more heat. Baby spinach works if you want the leafy texture but don’t mind losing the pepper. Frisée or radicchio can replace arugula’s bitterness in a salad, though without the same nutty edge.

For Korean cooking specifically, arugula is itself often used as a substitute for minari (미나리), Korea’s peppery water dropwort — the two share that bright, herbaceous sharpness. In fact, our guide to samgyeopsal with minari notes that young arugula works as a stand-in when minari is unavailable. When substituting in either direction, remember that arugula’s leaves are far more delicate than minari’s stems, so it belongs on top of a finished dish rather than simmered into a hot pot. Adjust quantities to taste, since some substitutes run hotter than others.

Nutritional Profile & Health Benefits

Arugula is a low-calorie, nutrient-dense leaf that punches above its weight. It is an outstanding source of vitamin K — roughly 109 micrograms per 100 grams, close to a full day’s recommended intake, according to the USDA FoodData Central database — along with folate, calcium, and a range of antioxidants. This makes it a genuinely useful way to add depth and nutrition to an otherwise simple home-cooked meal.

The most interesting compounds are arugula’s glucosinolates, the sulfur molecules behind its peppery flavor. When the leaves are chopped or chewed, these convert into bioactive isothiocyanates. A review of cruciferous vegetables and chronic disease concluded that these glucosinolate-derived compounds exert measurable antioxidant and anti-inflammatory effects in both preclinical and clinical studies (Frontiers in Pharmacology, 2021). Eating arugula raw matters here: the enzyme that activates these compounds is destroyed by high heat, which is another reason the Korean habit of using it as a fresh garnish makes nutritional sense. As with any leafy green, those on blood-thinning medication should be mindful of its high vitamin K content.

Frequently Asked Questions

What does arugula taste like? Arugula has a distinctively peppery, nutty, and slightly bitter flavor with a mustard-like sharpness. Younger baby leaves are milder and more tender, while mature leaves are noticeably spicier. This bold bite is why it pairs so well with rich grilled meats, melted cheese, and sweet fruit in Korean fusion dishes.

How do you store arugula? Keep arugula unwashed in the refrigerator, loosely wrapped in paper towel inside a breathable bag or container. Stored this way, it stays crisp for three to five days. Avoid washing before storage and do not freeze it, since the delicate leaves turn mushy. Rinse and dry the leaves only just before you use them.

What can I substitute for arugula? Watercress is the closest substitute, sharing arugula’s peppery, mustardy bite, while young mustard greens offer even more heat. Baby spinach works for texture if you want a milder result. In Korean cooking, arugula and minari (미나리) are frequently swapped for one another because both bring a bright, peppery sharpness.

Is arugula used in traditional Korean food? No — arugula is native to the Mediterranean and is not part of traditional Korean cuisine. It became popular in Korea through modern fusion and brunch culture, where it is now a "must-have" café green. It typically appears as a fresh garnish, a pizza topping, or a salad base rather than in classic Korean recipes.

Should you cook arugula? Arugula is best eaten raw or added at the very last moment to a hot dish. Its delicate leaves wilt almost instantly, and high heat destroys both its peppery flavor and the enzyme that activates its beneficial compounds. For dishes like warm bulgogi or pasta, scatter it on top right before serving to keep its color and crunch.

🩺 Dr.’s Nutritional Insight

Arugula’s signature peppery bite comes from glucosinolates — chiefly glucoerucin, which the body converts into erucin, the leaf’s major isothiocyanate. In laboratory and animal-model research, erucin has been shown to calm skin inflammation by blocking NFκB signaling, the pathway that drives redness and contributes to accelerated skin aging (International Journal of Molecular Sciences, 2013). These findings are preclinical rather than proven in human trials, but they align with broader clinical evidence that diets rich in cruciferous glucosinolates carry real antioxidant and anti-inflammatory benefits. Eating arugula raw and chewing it well best preserves the enzyme that activates these compounds. For a deeper look at how antioxidant-rich Korean ingredients support skin health, read our K-Beauty Kitchen surgeon’s guide to green tea and skin.

Beauty Benefit: Skin Health 🌿 | Anti-Aging ✨

Nutritional insight provided by Dr. James Lee, Board-Certified Plastic Surgeon

A Peppery Finish Worth Keeping on Hand

Arugula earns its trendy reputation in Korean kitchens for good reason: few ingredients add as much freshness, contrast, and "sophistication" for so little effort. Its peppery bite balances the sweetness of bulgogi, the richness of cheese, and the heat of a sizzling ttukbaegi, all while delivering vitamin K and antioxidant compounds that reward eating it raw. The single most important tip is restraint with heat — add it last, never cook it down.

Pick up a fresh bunch of arugula at your nearest H Mart or Korean grocer and try crowning a warm dish with it the next time you cook. Start by pairing it with a sweet-savory beef base — explore our Korean beef guide for the perfect partner, browse the playful fusion world of kimchi pizza and Korean-Western mashups, or, if you find yourself in Seoul, taste benchmark bulgogi at Woo Lae Oak’s 78-year-old kitchen. A handful of peppery green is all it takes to turn a simple plate into something memorable.