Royal Palace Vegetable
Estimated Inventory, lb : 0
Description/Taste
Royal Palace vegetables are comprised of small to medium-sized leaves, averaging 5 to 10 centimeters in length and 9 to 16 centimeters in diameter, and have a broad, oval, to cordate shape tapering to a blunt or pointed tip. The leaves grow in an alternate arrangement along a vine and have a wavy, crinkled appearance, showcasing prominent veining across the dark green, glossy surface. Royal Palace vegetables have varying consistencies, depending on the specific type. Some kinds have thinner leaves, while others have a thick, fleshy, slightly stiff, and sturdy nature. When chewed raw, the leaves have a succulent, crisp, and mucilaginous consistency. Once cooked, the greens develop a slippery, velvety texture. The bright green stems also range from tender to fibrous, based on maturity, and are occasionally eaten, bearing a crunchy, chewy mouthfeel. Royal Palace vegetables can be eaten when young and tender, or the leaves can be consumed in their mature state. The greens have a mild, fresh, vegetal, and earthy flavor.
Seasons/Availability
Royal Palace vegetables are available year-round in tropical climates. In subtropical to temperate climates, the greens have a peak season in the summer through fall.
Current Facts
Royal Palace vegetables, botanically classified as Basella alba, are a vining plant belonging to the Basellaceae family. The herbaceous climbing perennial produces sprawling vines extending 3 to 5 meters in length and is a species utilized for medicinal, ornamental, and culinary uses. Royal Palace vegetables are native to Asia and have naturalized in warm climates worldwide. The name Royal Palace is a moniker associated with the plant’s use in China and Taiwan. In Mandarin, the species is called Huang Gong Cai, translating to Royal Palace vegetable. The species is also called Chancai in Cantonese, meaning Slippery vegetable, Doufucai in Sichuanese, and Malabar spinach, Climbing spinach, and Ceylon spinach in English. Royal Palace vegetables are a conventional, seasonal green seen in markets throughout China and Taiwan. There are two types of Royal Palace vegetables, one with smaller and thinner leaves, while the other has broader and thicker leaves. Both kinds are utilized in raw and cooked culinary preparations and are favored by growers for their heat tolerance, disease resistance, and fast-growing nature. Royal Palace vegetables are commonly sold in small cut bundles and are consumed in savory dishes, especially throughout the warm summer season.
Nutritional Value
Royal Palace vegetables are viewed as a cooling ingredient and are used in Traditional Chinese Medicine to help clear heat from the body and cool the blood. The slippery nature of the greens also coats the intestines, aiding digestion and detoxifying the body. Royal Palace vegetables are a source of vitamins A, B, and C to contribute to energy production, maintain healthy organs, and strengthen the immune system. The species also provides fiber, which helps increase the feeling of fullness, and minerals like manganese, calcium, iron, phosphorus, and potassium. These minerals support bone and teeth health, balance fluid levels within the body, and produce proteins for oxygen transport through the bloodstream. Beyond vitamins and minerals, the plant's berries were historically used as a natural rouge. Records note that the juice of the berries was applied as lipstick and rouge for the face in China.
Applications
Royal Palace vegetables have a mild, earthy, and vegetal taste suited for raw or cooked culinary preparations. Young and tender leaves and shoots are favored for salads and are typically picked from the thick stems to develop a softer texture. Royal Palace vegetables have a crisp consistency when raw and are sometimes blanched and chilled to reduce their slippery nature in cold salads. The greens are also blanched and dipped in sauce as a side dish or snack. In China and Taiwan, Royal Palace vegetables are popularly stir-fried with garlic, ginger, and sesame oil for enhanced flavoring. They are also stir-fried with eggs as a cooling dish or cooked with crab for a sweet taste. In addition to stir-frying, Royal Palace vegetables are simmered into soups and curries, and their viscous nature acts like a thickening agent. Royal Palace vegetables pair well with flavoring agents such as soy sauce, sesame, and oyster sauce, meats including beef, pork, or poultry, and seafood such as white fish, shrimp, scallops, and squid. Whole, unwashed Royal Palace vegetables should be immediately consumed for the best quality and flavor. The greens will keep for 2 to 5 days when stored in the refrigerator. They can also be parboiled and frozen or ground into a powder for extended use.
Ethnic/Cultural Info
Royal Palace vegetables have acquired several legends surrounding their regal name. The first theory claims it originated in the Western Jin Dynasty, from 266 to 316 CE. Legend has it that an imperial envoy visited the White Horse Temple, and the monks fed the envoy a dish made with the slippery greens. The envoy was curious as to why the greens had a unique texture, and when they asked the monks about the vegetable, the abbot replied that the dish was a royal meal that they prepared for the emperor, giving the dish the name Royal Palace. Another legend claims that Taoist priest Bao Liang spent time alone meditating and survived on wild fruits and vegetables. When he ate the crisp leaves of Basella alba, he immediately became refreshed, and his mind and spirit were cleansed. The priest took cuttings of the plant to the emperor, and the greens were adopted into the cuisine of the Imperial Palace. The final theory traces the dish to Thailand, where a dish of cooked greens was made at the Thai Royal Palace. This dish was later presented to Chinese and Taiwanese farmers, and these producers adopted the royal name as they cultivated the greens.
Geography/History
Royal Palace vegetables, or Basella alba, are native to Asia, with hypothesized origins in the Southern and Southeast Asia areas. The species has been growing wild since ancient times and spread to East Asia through trade routes in early history, where it was cultivated as a medicinal and culinary ingredient. The species also escaped cultivation and naturalized over time, making it feel like a native vegetable in some East Asian regions due to its longstanding presence in natural landscapes. Records of Basella alba were documented in China as early as the Qin and Han Dynasties, 221 BCE to 220 CE. The species was also notably mentioned during the Ming Dynasty in the Compendium of Materia Medica, an encyclopedia of Traditional Chinese Medicine written by herbalist and naturalist Li Shizhen. Basella alba was introduced from China to Taiwan in the mid-17th century and was extensively planted in low-altitude regions on the island. Today, Royal Palace vegetables thrive in warm, humid climates worldwide and are present in naturalized areas, wild in forests, and cultivated in home gardens and urban landscapes. The greens are traditionally found under the Royal Palace name at fresh markets throughout East Asia, primarily China and Taiwan.
