Shiso : Shiso Leaf Culinary Uses

With its distinctive serrated leaves, shiso brings a complex, aromatic flavor that is essential to many Asian cuisines. This unique herb, sometimes called perilla, is a cornerstone of flavor in Japanese, Korean, and Vietnamese cooking. You might recognize it as the green leaf accompanying sushi or the purple leaf coloring your umeboshi plum.

Understanding shiso can open up a new world of culinary possibilities. Its taste is hard to pin down, often described as a mix of mint, basil, cumin, and anise. This guide will explain everything you need to know about shiso, from its different types to how to grow, store, and cook with it.

Shiso

Shiso is the Japanese name for the plant Perilla frutescens var. crispa. It is a member of the mint family, Lamiaceae, which explains its aromatic qualities. The plant is native to the mountain regions of China and India but has been cultivated across East Asia for centuries.

It is not just a single herb but comes in several key varieties, each with its own culinary purpose. Knowing the difference is the first step to using shiso correctly in your kitchen.

Green Shiso (Aojiso)

This is the most common variety you will encounter. Green shiso has vibrant green leaves with a serrated edge. Its flavor is bright, herbaceous, and slightly citrusy with notes of mint and anise. It is the default shiso used in most Japanese dishes.

Primary Uses: Served fresh as a garnish for sushi and sashimi. It is also chopped and mixed into salads, tossed into noodle dishes, or used as a wrapper for grilled meats.
Flavor Profile: Refreshing, minty, with a hint of cumin.

Red Shiso (Akajiso)

Red shiso is known for its deep burgundy-red color on both sides of the leaf. It has a more astringent, tannic flavor compared to the green variety. Its strong pigments make it an excellent natural dye.

Primary Uses: Most famously used to color and flavor umeboshi (pickled plums), giving them their characteristic pink hue. It is also used to make a refreshing summer tea called “shiso juice” and to pickle other vegetables.
Flavor Profile: More robust, earthy, and slightly bitter than green shiso.

Korean Perilla (Kkaennip)

While botanically very similar, Korean perilla leaves are typically larger, flatter, and have a less serrated edge than Japanese shiso. The flavor is also distinct, often stronger and more pungent, with a flavor somewhere between mint and sesame.

Primary Uses: Primarily used as a wrap for grilled meats (ssam) in Korean barbecue. The leaves are also pickled, used in kimchi, or added to soups and stews for a aromatic punch.
Flavor Profile: Bold, aromatic, with pronounced mint and anise notes.

Culinary Uses Of Shiso

Shiso is incredibly versatile in the kitchen. It can be used as a herb, a vegetable, a garnish, or a flavoring agent. Its unique taste complements a wide range of ingredients.

In Japanese Cuisine

In Japan, shiso is ubiquitous. You’ll find it adding a fresh, clean note to balance rich or oily foods.

Sushi and Sashimi: A single leaf of green shiso is often placed underneath slices of sashimi or within sushi rolls. It adds fragrance, a touch of color, and is believed to have antibacterial properties.
Tempura: Whole shiso leaves are lightly battered and deep-fried for a crispy, fragrant appetizer.
Finely Chopped: Minced shiso is mixed into somen noodle dipping sauces, sprinkled over cold tofu (hiyayakko), or folded into rice dishes.
As a Condiment: It is sometimes combined with umeboshi paste to create a flavorful filling for onigiri (rice balls).

In Korean Cuisine

Korean perilla, or kkaennip, is used more as a substantial wrap or pickle rather than a delicate garnish.

Ssam (Wraps): Large perilla leaves are used to wrap pieces of grilled meat (like samgyeopsal), garlic, and ssamjang (a spicy paste). The leaf’s strong flavor cuts through the fat of the meat.
Pickled Perilla: The leaves are pickled in a soy-based brine, creating a banchan (side dish) that is served with every meal.
In Stews and Pancakes: Chopped leaves can be added to soups like doenjang jjigae or mixed into the batter for savory pancakes (buchimgae).

In Vietnamese And Other Cuisines

Vietnamese cuisine uses a variety similar to green shiso, often called “tiá tô.” It is part of the standard herb platter served with pho and other noodle soups. You tear off pieces and add them to your bowl according to your taste. It’s also used in fresh spring rolls and salads.

Modern fusion chefs have embraced shiso for its unique profile. You might find it in cocktails, infused into oils and vinegars, or as a surprising element in Western-style salads and seafood dishes. Its ability to bridge minty, citrusy, and savory flavors makes it a chefs favorite for adding complexity.

Growing And Harvesting Your Own Shiso

Shiso is a relatively easy herb to grow, making it a rewarding addition to your garden or windowsill. It’s an annual plant, meaning it completes its life cycle in one growing season.

Planting Shiso

You can start shiso from seed or purchase young seedlings from an Asian nursery or specialty garden center. Seeds can be slow to germinate, so starting with plants is often easier for beginners.

Timing: Plant seeds or seedlings after the last frost when the soil has warmed. Shiso loves warm weather.
Sunlight: Choose a spot with full sun to partial shade. At least 6 hours of sunlight is ideal.
Soil: Well-draining soil is crucial. The plant prefers soil that is rich in organic matter but is otherwise not too fussy.
Spacing: If planting multiple plants, space them about 10-12 inches apart to allow for good air circulation.

Care And Maintenance

Shiso is not a particularly high-maintenance plant once established.

Watering: Water regularly to keep the soil consistently moist, but not waterlogged. The plant will wilt if it gets too dry.
Feeding: A light application of a balanced, all-purpose fertilizer once or twice during the growing season is usually sufficient.
Pests: It is fairly pest-resistant, though keep an eye out for aphids or spider mites, especially on indoor plants.

One important note is that shiso can self-seed prolifically. If you don’t want it to spread, be sure to pinch off the flower spikes before they go to seed. The flowers themselves are small and white or purple and are also edible.

Harvesting And Storing Shiso

You can begin harvesting leaves once the plant is well-established and has several sets of true leaves.

How to Harvest: Pick leaves from the top of the plant to encourage bushier growth. Use clean scissors or pinch leaves off with your fingers.
Storing Fresh: For short-term use, wrap the leaves in a slightly damp paper towel and place them in a plastic bag or airtight container in the refrigerator. They should last for up to a week stored this way.
Long-Term Preservation: Shiso can be frozen. Blanch leaves quickly in boiling water, then plunge into ice water. Pat dry, lay flat on a tray to freeze individually, then transfer to a freezer bag. You can also make shiso pesto or compound butter and freeze it in portions.

Health Benefits And Nutritional Profile

Beyond its culinary uses, shiso has a long history in traditional medicine. Modern science is beginning to identify the compounds behind these traditional benefits.

Nutritional Content

Shiso leaves are low in calories but rich in vitamins, minerals, and beneficial plant compounds. They are an excellent source of:

Vitamin A: Important for vision and immune function.
Calcium: Contributes to bone health.
Iron: Essential for blood health.
Potassium: Helps regulate blood pressure.
Dietary Fiber: Aids in digestion.

It also contains rosmarinic acid, a potent antioxidant also found in rosemary and basil.

Potential Health Benefits

Traditional medicine systems in Asia have used shiso to treat various conditions, from coughs and colds to allergies and food poisoning. While more research is needed, preliminary studies suggest several potential benefits.

Anti-Inflammatory and Anti-Allergic Properties

The rosmarinic acid in shiso is a strong anti-inflammatory agent. Some studies indicate it may help reduce symptoms of allergic reactions, like those seen in seasonal allergies or asthma, by supressing the release of histamines.

Antioxidant Activity

The compounds in shiso, particularly in the red variety, help combat oxidative stress in the body. This can protect cells from damage and may lower the risk of chronic diseases.

Digestive and Antimicrobial Support

In culinary contexts, shiso is often paired with raw fish. This is partly because its essential oils are thought to have mild antibacterial and antiseptic properties, which could help prevent foodborne illness. It has also been used traditionally to soothe nausea and an upset stomach.

It’s important to remember that shiso is a food, not a medicine. While it is a healthy addition to your diet, you should not rely on it to treat medical conditions without consulting a healthcare professional.

Step-By-Step Guide To Using Shiso In Your Cooking

Ready to start cooking with shiso? Here are a few simple, beginner-friendly recipes to get you acquainted with its flavor.

Simple Shiso Salad Dressing

This dressing is a fantastic way to use a handful of shiso leaves. It’s light, fragrant, and perfect for a cucumber or green salad.

Gather 8-10 fresh green shiso leaves, 1/4 cup rice vinegar, 2 tablespoons soy sauce, 1 tablespoon sesame oil, 1 teaspoon grated ginger, and 1 tablespoon honey or sugar.
Rinse the shiso leaves and pat them completely dry. Stack the leaves, roll them tightly, and slice thinly to create a chiffonade.
In a small bowl or jar, whisk together the rice vinegar, soy sauce, sesame oil, ginger, and honey until the honey is dissolved.
Stir in the sliced shiso leaves. Let the dressing sit for at least 15 minutes before use to allow the flavors to meld. Store any leftovers in the refrigerator for up to 3 days.

Classic Shiso Tempura

This is a simple and impressive appetizer. The frying mellows the herb’s flavor slightly while creating a delightfully crispy texture.

Prepare a tempura batter by mixing 1 cup of ice-cold water with 1 cup of all-purpose flour. Mix lightly; lumps are fine. The key is keeping everything very cold.
Wash and thoroughly dry 12-15 whole shiso leaves. Make sure they are dry, or the batter won’t stick properly.
Heat 2 inches of neutral oil (like vegetable or canola) in a heavy pot to 350°F (175°C).
Dip each leaf into the tempura batter, letting excess drip off. Carefully lower it into the hot oil.
Fry for about 60-90 seconds until the batter is pale golden and crisp. Do not overcrowd the pot. Remove with a slotted spoon and drain on a wire rack or paper towels.
Serve immediately with a dipping sauce of tentsuyu (mix dashi, soy sauce, and mirin) or simply with a sprinkle of sea salt.

Korean-Style Pickled Perilla Leaves

This side dish is addictive and easy to make. It keeps well in the fridge.

You will need 20-25 Korean perilla leaves (kkaennip), 1/2 cup soy sauce, 1/4 cup water, 2 tablespoons rice vinegar, 1 tablespoon Korean chili flakes (gochugaru), 1 tablespoon honey or sugar, 3 cloves minced garlic, and 1 teaspoon minced ginger.
Gently wash the perilla leaves and pat them completely dry. Stack them in a neat pile.
In a bowl, whisk together all the remaining ingredients to make the brine.
Place the stack of leaves in an airtight container. Pour the brine over the leaves, ensuring it seeps between them. You can use a weight to keep them submerged.
Seal the container and refrigerate for at least 24 hours before eating. The pickled leaves will keep for several weeks in the refrigerator.

Where To Find And How To Select Shiso

If you’re not growing your own, finding fresh shiso may require a trip to a specialty market.

Finding Fresh Shiso

Asian Grocery Stores: This is your best bet. Japanese markets will carry green and sometimes red shiso. Korean markets will have the larger perilla leaves (kkaennip). Vietnamese markets may carry their variety (tiá tô).
Farmers’ Markets: In areas with a significant Asian population or adventurous growers, you might find shiso at local farmers’ markets during the summer months.
Well-Stocked Supermarkets: Some high-end or internationally-focused supermarkets may carry shiso in the fresh herbs section, though it can be expensive and less common.

Choosing The Best Leaves

When selecting fresh shiso, look for the following signs of quality:

Vibrant Color: Green shiso should be a bright, vivid green. Red shiso should have a deep, consistent purple-red hue. Avoid leaves with yellowing or brown spots.
Crisp Texture: The leaves should feel firm and crisp, not wilted or soggy. They should snap when bent gently.
Fresh Aroma: Give them a gentle sniff. You should detect a clean, aromatic scent. Avoid bunches with little to no fragrance.

If you cannot find fresh shiso, some stores carry it pickled or as a dried herb, though the flavor will be different. For Korean perilla leaves, jars of pickled kkaennip are widely available and a good pantry staple.

Frequently Asked Questions About Shiso

What Does Shiso Taste Like?

Shiso has a complex flavor profile that is often described as a combination of mint, basil, anise, and citrus with a hint of cumin. The green variety is brighter and more citrusy, while the red variety is more earthy and astringent. Korean perilla has a stronger, more pungent flavor similar to mint and sesame.

Can I Substitute Another Herb For Shiso?

There is no perfect substitute for shiso’s unique flavor, but you can approximate it depending on the dish. For green shiso, a combination of fresh mint and basil can work in a pinch. For the aromatic quality in Korean dishes, mint might be closer than basil. Remember that the flavor will not be identical, but it can provide a similar fresh, herbal note.

Is Shiso The Same As Perilla?

Yes and no. “Shiso” specifically refers to the Japanese cultivars of the Perilla frutescens plant. “Perilla” is the broader botanical name. Korean perilla (kkaennip) is a different variety of the same species, leading to differences in leaf size, texture, and flavor intensity. They are closely related but used somewhat differently in their respective cuisines.

How Do I Store Fresh Shiso To Make It Last Longer?

The best method is to treat it like a fresh bouquet. Trim the stems, place them in a glass with an inch of water, and loosely cover the leaves with a plastic bag. Store it in the refrigerator. Alternatively, wrap the leaves in a slightly damp paper towel and place them in a sealed plastic bag or container in the fridge’s crisper drawer. Properly stored, it should stay fresh for 5-7 days.

Are Shiso Flowers Edible?

Yes, the small white or purple flowers that bloom on shiso plants are