Kale is a leafy green vegetable belonging to the Brassica family, closely related to cabbage, broccoli, and Brussels sprouts. It has been cultivated for thousands of years and was one of the most widely grown vegetables in Europe throughout the Middle Ages, valued for its hardiness, nutritional density, and ability to thrive in cold conditions. Today it is recognised globally as one of the most nutrient-rich foods available, packed with vitamins K, A, and C, alongside calcium, iron, and a broad range of antioxidants and anti-inflammatory compounds.
In terms of flavour, kale sits in a distinctly savoury register — earthy, slightly mineral, and carrying a characteristic bitterness that varies considerably between varieties and across seasons. Cold weather notably improves its flavour, as frost converts some of the leaf’s starches into sugars, softening its bitterness into something more complex and pleasant. This seasonal sweetening is one of the reasons kale harvested in autumn and winter is often noticeably more enjoyable than summer-grown leaves.
Its application in salads represents one of the most significant shifts in salad culture over the past two decades. Once considered too tough and assertive for raw eating, kale was largely confined to soups, stews, and cooked side dishes until the technique of massaging the raw leaves with oil and salt became widely understood. That simple process breaks down the fibrous cell structure of the leaf, rendering it tender, glossy, and far more palatable, effectively transforming it from an ingredient that needed cooking into one that thrives raw.
A kale salad, when made well, offers something that more delicate greens simply cannot — staying power. Unlike lettuce or spinach, which wilt within minutes of being dressed, kale actually improves after sitting with its dressing for fifteen minutes to an hour, as the acid and oil continue to tenderise the leaves and the flavours meld and deepen. This makes it an outstanding choice for meal-prepped lunches, picnics, and gatherings where the salad must be prepared in advance without sacrificing quality or texture.
Kale Variety for Salad
Lacinato Kale
Also known as Dinosaur kale or Tuscan kale, Lacinato is widely regarded as the finest kale for raw salads. Its long, narrow, deeply textured leaves have a dark blue-green colour and a flavour that is earthier, sweeter, and considerably less bitter than curly varieties. The leaves are tender enough to eat raw with minimal massaging, and their robust texture holds up beautifully under dressings without wilting quickly, making it the preferred choice of chefs and home cooks alike for fresh salads.
Red Russian Kale
Red Russian is one of the most tender and delicately flavoured of all kale varieties, with flat, deeply lobed leaves edged in purple-red that look as beautiful on the plate as they taste. Its flavour is mild, slightly sweet, and faintly peppery — far gentler than most kales — making it exceptionally approachable for those new to eating raw kale. The leaves require little to no massaging and pair particularly well with lighter vinaigrettes, citrus-based dressings, and sweet additions like dried fruit, apple slices, and toasted nuts.
Siberian Kale
Siberian kale produces large, flat, blue-green leaves with a smooth surface and a mild, sweet flavour that becomes more pronounced after exposure to cold weather. It is one of the hardiest of all kale varieties, tolerating frost extremely well, and its cold-sweetened leaves make it outstanding for late-season and winter salads when most other salad greens have long since faded. The leaves are tender enough for raw use when young and pair well with bold, creamy dressings and hearty salad ingredients like roasted grains and root vegetables.
Winterbor Kale
Winterbor is a curly kale variety that, when harvested young, produces tender, tightly ruffled leaves that work surprisingly well in salads despite curly kale’s reputation for toughness. Its deep green, heavily frilled leaves hold dressing exceptionally well within their curls and crevices, ensuring every bite is thoroughly coated with flavour. Massaging the leaves briefly with a little olive oil and salt before dressing them breaks down their fibrous texture, transforming them into a pleasantly tender and satisfying salad base with a robust, slightly mineral flavour.
Redbor Kale
Redbor is one of the most visually stunning kale varieties available, with deeply curled, richly purple-red leaves that bring extraordinary colour to a salad bowl. Beyond its visual appeal, it has a pleasantly mild flavour with a gentle bitterness and a subtle sweetness that intensifies after cold weather. Like Winterbor, its curly leaves benefit from brief massaging before use in raw preparations, and its vivid colour makes it an outstanding choice for salads where visual presentation is as important as flavour, particularly in composed or restaurant-style dishes.
Toscano Kale
Toscano kale, sometimes sold under names like Rainbow Lacinato or simply Italian kale, is a close relative of Lacinato with similarly long, puckered, strap-shaped leaves but with a slightly broader profile and occasionally more colourful stems. Its flavour is rich, earthy, and satisfying with a deep savouriness that pairs beautifully with umami-rich dressings featuring ingredients like miso, tahini, or anchovy. It is particularly popular in Italian-inspired salads dressed simply with good olive oil, lemon juice, garlic, and shaved Parmesan, a combination that allows its distinctive flavour to shine without competition.
Baby Kale Mix
While not a single variety, baby kale mixes — typically combining young leaves of Lacinato, Red Russian, and Siberian varieties harvested at a very early stage — deserve a place on this list for their exceptional salad qualities. The very young leaves are extraordinarily tender, mild, and sweet, requiring no massaging whatsoever and making them interchangeable with baby spinach and other delicate salad greens. They are the most accessible entry point into raw kale salads, available pre-washed in most supermarkets, and their tender texture and gentle flavour make them a universally appealing option for everyday salad making.