Shiso is a remarkable herb that has travelled from East Asia to modern kitchens around the world. With a bright, peppery aroma, nuanced notes of anise and mint, and a whisper of clove, Shiso adds depth and freshness to dishes. This article dives into the world of Shiso, exploring its varieties, uses, growing advice for the UK climate, health properties, and inspiring ways to incorporate it into everyday cooking. Whether you are a seasoned fan of Japanese cuisine or a curious cook seeking vibrant greens to elevate your plates, Shiso deserves a place in your herb collection.
What is Shiso?
Shiso is the common name for various plants in the Perilla genus, most notably Perilla frutescens. In culinary circles, the green variety is often called ao Shiso, while the purple or red variety is known as aka Shiso. The leaves are slender, serrated, and carry a distinctive fragrance that can be described as refreshing, citrusy, and slightly spicy. In Japan, Shiso is a staple for sushi garnishes, salads, and wraps, but its appeal spans many cuisines and techniques. If you are new to Shiso, start with a small amount and adjust to taste; its flavour can be a delightful surprise, rather than overpowering, when used thoughtfully.
Shiso Varieties: Green, Purple, and Beyond
The world of Shiso is wonderfully diverse. The two most common varieties in Western markets are the green ao Shiso and the purple aka Shiso, yet others exist and each carries a unique profile that influences its best culinary applications.
Ao Shiso (Green Shiso)
Ao Shiso, or green Shiso, offers a bright, grassy, and slightly citrusy aroma with a crisp, tender leaf texture. It pairs beautifully with fish, salads, and light sauces. Its appearance is a vibrant green that brings colour and a fresh note to dishes without overpowering other flavours. In the kitchen, ao Shiso is often used to wrap nigiri, garnish sashimi, or folded into rice for a fragrant lift.
Aka Shiso (Red/Purple Shiso)
Aka Shiso carries deeper colour and a more pronounced aroma. The leaves often carry hints of anise and a touch of mint, with a slightly peppery finish. Red Shiso is not only attractive for plating but also provides a striking contrast in dishes—think pickled ribbons with rice and seafood, or as a flavourful accent in salads and marinades. In cooking, Aka Shiso can stand up to stronger ingredients while still delivering its characteristic brightness.
Other Varieties and Subtypes
Across Asia and among enthusiasts, you may encounter varieties such as Shiso cotyledon, Shiso leaves with variegation, or bolder hybrid forms developed for culinary or ornamental purposes. While many of these share the same fundamental perceptible traits—the cool, menthol-like aroma and the unique balance of minty and anise-like notes—their intensity and colour can vary. Exploring these can be a delightful way to expand your repertoire, especially in paired dishes where the shade of green or purple matters for presentation as well as taste.
Flavour, Aroma and How Shiso Transforms Dishes
The flavour profile of Shiso sits somewhere between mint, basil, and anise, with a peppery kick and a cool aftertaste. Some tasters detect clove-like warmth and citrusy brightness, depending on variety and freshness. The aroma is equally important; it invites a sense of freshness that brightens the palate. In the context of a dish, Shiso can lift subtle flavours—seafood, cucumber, tofu, and lightly dressed greens—without masking them. It also acts as a natural flavour amplifier, adding complexity through its essential oils and delicate bitterness.
As a culinary trick, Shiso is often used as a finishing herb, pressed into the final minute of cooking, or used raw to maintain its volatile oils. It should be added late in the preparation or used as a table herb to preserve its vibrant aroma. When dried, Shiso loses some of its brightness, so most chefs favour fresh leaves or quick-pickled preparations to capture its best personality.
How to Use Shiso in Cooking
Shiso is incredibly versatile. From Sushi to salads and sauces, there are many ways to incorporate the herb into your cooking. The following ideas offer practical and delicious approaches for home kitchens.
Fresh Leaves in Salads and Wraps
Shiso leaves are a delightful addition to green salads, grain bowls, and noodle dishes. Tear the leaves into ribbons or finely mince for a peppery, citrus-touched lift. For a quick hit of flavour, lay a few Shiso leaves over a tomato-based salad or cucumber salad to introduce fragrance and brightness without adding heaviness.
Sushi, Sashimi and Japanese Classics
Shiso is a natural companion to raw fish and sushi rice. Place a leaf under slices of sashimi, or finely shred the leaf and mix with rice for a fragrant fold. In maki rolls, a Shiso leaf can act as a crisp, tart layer that cuts through the richness of fish and mayo fillings. Shiso is also used in some strains of pickled ginger blends, offering contrast to the usual soy-ginger profile.
Infused Oils, Dressings and Dips
Make a Shiso-infused oil by steeping fresh leaves in neutral oil for a few hours. The resulting oil carries a gentle, herbaceous aroma ideal for dressings, drizzling over grilled vegetables, or finishing seafood. Shiso pairs well with sesame, citrus, soy, and rice wine vinegar. A simple vinaigrette with Shiso, lemon juice, and a touch of sesame oil makes a vibrant addition to salads.
Pickling and Tsukemono
In Japanese cuisine, Shiso is often used in tsukemono (pickles) to impart fragrance and depth. Quick pickles with cucumber or carrots, seasoned lightly with salt, rice vinegar, and Shiso, offer a refreshing side dish that carries an evocative aroma long after tasting.
Tempura and Light Frying
Shiso leaves are excellent when lightly battered and fried as tempura. The crisp exterior contrasts with a tender leaf interior, yielding a delicate herbal note that brightens the dish. When frying, keep oil hot enough to prevent sogginess, and serve immediately to preserve fragrance.
Shiso Pesto and Condiments
For a twist on classic pesto, substitute a portion of basil with Shiso. A Shiso pesto, blended with pine nuts, garlic, lemon juice, olive oil, and parmesan, introduces a distinctly aromatic character. This pesto is wonderful tossed with pasta, used as a spread for breads, or swirled into soups for a flavour lift.
Shiso in Global Cuisine: From Japan to Global Tables
While Shiso originates in East Asia, its appeal has spread worldwide. The leaf is now a familiar sight in many fusion menus and home cooks who value bright, fresh flavours. The following overview highlights how Shiso finds its place across cuisines.
Japanese Cuisine and Tradition
In Japan, Shiso is a mid-year staple in bento boxes, miso-based dishes, and seafood presentations. The herb’s clean notes complement soy, miso, and dashi-based flavours, and it is often used to garnish or wrap items, adding fragrance and colour. The celebrated combination of Shiso with fresh fish, cucumbers, and rice highlights how the herb can act as a palate cleanser or a flavour amplifier in a well-balanced meal.
Korean and Southeast Asian Influences
In Korean cooking, there are equivalents that echo Shiso’s bright, minty character, often used with grilled meats and cold noodle dishes. Southeast Asian kitchens employ Shiso for fresh, herb-forward sauces and salads, where its aroma acts as a bridge between broader herb flavours. The adaptability of Shiso makes it a natural partner for citrus, chilli, and soy-based sauces common in these cuisines.
Western and Fusion Applications
Chefs in Western kitchens experiment with Shiso in everything from salads to cocktails, drawing on its distinctive aroma to craft modern plates. Shiso can replace basil in some recipes, imparting a cooler, more complex profile. Fusion dishes may pair Shiso with dairy, eggs, or cheese, offering an unconventional but harmonious note that brightens heavier ingredients.
Growing and Sourcing Shiso: Cultivation in the UK and Beyond
Growing Shiso in the UK climate is feasible with a little attention to light, warmth, and moisture. If you do not have a garden bed, containers and balcony planters are excellent alternatives. The following tips will help you harvest robust, fragrant Shiso leaves for daily use.
Climate and Growing Conditions
Shiso thrives in temperatures between 15°C and 25°C and prefers full sun to partial shade. In the UK, where summers can be cool and temperate, starting plants indoors or buying young plants in spring and transplanting after the last frost can provide a reliable harvest. Shiso appreciates rich, well-drained soil with moderate moisture. Avoid waterlogging, which can cause root issues and reduce leaf quality.
Propagation and Plant Care
Shiso can be propagated from seeds or cuttings. For speed, start with young plants from a reputable nursery and pot them in a well-draining potting mix. Prune regularly to encourage bushier growth and prevent legginess. Pinch growing tips to maintain compact, leafy plants that produce abundant harvests throughout the growing season.
Indoor Growing and Containerised Options
If space is limited, Shiso grows well in containers on a sunny windowsill or balcony. Use a tall, shallow pot with good drainage and a well-draining soil mix. Regular feeding with a balanced fertiliser will keep the plant healthy and the leaves developing their characteristic aroma.
Harvesting Tips and Storage
Harvest Shiso leaves when they are young and tender for the best aroma and flavour. Use scissors to snip leaves from the plant to avoid damaging the main stem. Rinse gently and dry thoroughly before use. For longer storage, wrap leaves in a slightly damp paper towel and place them in a plastic bag in the fridge. Fresh Shiso leaves typically keep for several days; for longer-term use, you can freeze leaves or blend them into a quick pesto and freeze in ice-cube trays for later use.
Nutrition, Health Benefits and Considerations
Shiso is not only a flavour booster but also a source of nutrients and bioactive compounds. While it is typically used in small quantities, the herb provides insights into a balanced diet when included regularly in meals.
- Antioxidants: Shiso contains essential oils and polyphenols that contribute to antioxidant activity, supporting general cellular health and immune function.
- Vitamins and minerals: Leaves contain modest amounts of vitamins A and C, along with minerals like calcium and iron. These nutrients complement a plant-forward diet and add depth to meals when used as a fresh garnish.
- Potential anti-inflammatory properties: Some components of Shiso have demonstrated anti-inflammatory potential in culinary contexts and traditional use, supporting a calm palate with each serving.
As with all herbs, consumers should be mindful of allergies and sensitivities. Individuals with known sensitivities to Perilla or related species should try small amounts first and monitor any adverse reactions. If you are pregnant or have specific medical concerns, consult a healthcare professional before making Shiso a daily feature in your diet.
Substitutions and Substitutes: What to Use If Shiso Isn’t Available
Shiso offers a unique aroma, but there are excellent substitutes when it is not on hand. Consider the following options, keeping in mind the similarities and differences in aroma and texture.
Fresh Basil and Mint
Basil and mint share some of Shiso’s fresh, green character, especially in terms of brightness and aromatic oils. Use basil as a base, then add a dash of mint for a close approximation to Shiso’s minty notes. This substitution works well in salads, pesto, and fresh herb garnishes.
Cilantro (Coriander) for Freshness
Cilantro adds a citrusy, slightly spicy note that can mimic Shiso’s brightness in certain contexts, particularly in Asian-inspired dishes with light dressings and seafood. Use cilantro sparingly to avoid overpowering the dish.
Perilla Leaves as a Direct Alternative
Perilla leaves, the same botanical family as Shiso, are a direct substitute in some markets. They carry a very similar aroma and can be used in wraps, salads, and garnishes with a minimal adjustment to cooking times and quantities.
Herb Blends
In a pinch, an herb blend that includes mint, basil, and a touch of cilantro can approximate Shiso’s green profile. Use a lighter hand to avoid overwhelming the dish with competing flavours.
Practical Tips for Shopping and Storing Shiso
Quality Shiso leaves are crisp, vibrant, and free from yellowing or browning. When shopping, look for leaves that are evenly green or purple with no signs of wilting. Avoid packages where the leaves are mushy for a longer-lasting harvest. At home, store Shiso in the refrigerator with stems hydrated in a glass of water, covered loosely with a plastic bag. For longer-term use, freeze leaves or prepare a Shiso pesto and freeze in portions for future meals.
A Quick Catalogue of Shiso-Inspired Recipes
Here are a handful of ideas to spark your cooking. Each concept can be scaled up or down to suit occasion, appetite, and the depth of Shiso you want to feature.
- Shiso and Citrus Salmon: A light, fragrant dish where Shiso ribbons are folded into a citrus glaze for a delicate finish.
- Ao Shiso Sushi Rolls: Use fresh leaves as wraps around avocado, cucumber, and crab or tuna for a refreshing bite with a scented twist.
- Shiso Pesto Pasta: A bright pesto combining Shiso with garlic, pine nuts, and parmesan for a midweek crowd-pleaser.
- Shiso Salad with Sesame Dressing: Toss torn Shiso leaves with greens, sesame seeds, and a sesame-ginger dressing for colour and aroma.
- Tempura Shiso Leaves: Dip the leaves in a light batter and fry until crisp, served with a soy-based dipping sauce.
- Shiso Ice or Sorbet: A surprising dessert or palate cleanser, using Shiso-infused syrup for a refreshing finish.
Final Thoughts: Embracing Shiso in Your Kitchen
Shiso is a flexible, aromatic herb that elevates a wide range of dishes with minimal effort. Its bright, complex aroma invites experimentation, whether you are cooking traditional Japanese fare or exploring fusion recipes with modern twists. For home cooks in the UK and beyond, Shiso offers a doorway to new textures and flavours that complement seafood, salads, grains, and dairy. By understanding the differences between ao Shiso and Aka Shiso, how to use fresh leaves effectively, and ways to grow and store the herb, you can craft dishes that are both authentic and refreshingly contemporary. Experiment with Shiso, and you may discover a new favourite herb that changes the way you think about everyday cooking.