Suji Leaves
Estimated Inventory, lb : 0
Description/Taste
Suji leaves vary in size, depending on maturity, and average 15 to 30 centimeters in length and 2 to 4 centimeters in diameter when sold in commercial markets. The leaves grow in an alternate formation along stems with grey, green, and brown hues, and this leaf arrangement is a key defining feature of the species. The leaves bear a long, lanceolate, straight, to sword-like shape with slight tapering to a point on the non-stem end. The leaves are similar in appearance to pandan leaves, but the overall size of Suji leaves is typically shorter and slightly wider than pandan leaves. The leaves also prominently display a deep groove down the center and light striations running the length of the green. Suji leaves are semi-smooth, pliable, and fleshy with a dark green coloring. The leaves are edible when cooked, but often have a sharp, slightly bitter, green, and grassy taste, especially when prepared in large quantities. Suji leaves are favored for their natural coloring and are used to add pigmentation to dishes more than flavor.
Seasons/Availability
Suji leaves are available year-round.
Current Facts
Suji leaves, botanically classified as Dracaena angustifolia, are the foliage of an evergreen species belonging to the Asparagaceae family. The shrub-like plant is comprised of upright stems that extend 1 to 3 meters in height and produce tapered, blade-like leaves, which are foraged for culinary, medicinal, and cultural purposes throughout Southeast Asia. Suji leaves are widely available in Asia, but are most extensively used in Indonesia. The species is also known as Suji and Daun Suji in Indonesia and Malaysia, Nam Ginseng in Vietnam, Saiheva and Si-Ei in Papua New Guinea, and Meng La Long Xue Shu or Chang Hua Long Xue in China. Unlike other species, Suji leaves are traditionally sourced for their pigmented nature and are boiled and crushed to extract vivid green hues. This coloring is prized over the leaf’s taste and is famously paired with pandan leaves for flavoring and coloring a wide array of sweet and savory culinary dishes.
Nutritional Value
Suji leaves have not been extensively studied for their nutritional properties, as they are mainly used for their colored juice and are not commonly eaten whole. The leaves are high in chlorophyll, which is the green pigment that a plant uses to make its food. Chlorophyll is what gives Suji leaves their dark green coloring, and these rich pigments are extracted and added to culinary dishes. Chlorophyll also possesses antioxidant properties that help strengthen the immune system, reduce inflammation, and protect against oxidative stress and free radical damage. In natural medicines throughout Southeast Asia, Suji leaves and other parts of the plant, such as the roots, are used in remedies to treat stomachaches, fight infections, and treat lung-related issues.
Applications
Suji leaves are known for their vibrant green coloring and are used to add pigment to culinary dishes and drinks. The leaves are not valued for their flavor as they are very mild and sometimes have a slightly sharp, bitter taste if used in large quantities. Suji leaves are often paired with pandan leaves to achieve a more favorable flavor. The leaves are processed in a blender, crushed by hand, chopped, pounded, and boiled to extract the juice. The juice is mixed with pandan leaves and added to desserts such as puddings, cakes, custards, jellies, ice cream, and sorbets. In Indonesia, Suji leaves are a commonly used coloring for cake and rice ball treats like klepon, kuih lompang, and selendang mayang, or they are added to dadar gulung, which is a thinly rolled crepe or pancake with coconut filling. Kue putu is also colored with Suji leaves and is a bite-sized steamed dessert cooked in bamboo tubes and sold by street vendors. Other typical dishes that are colored with Suji leaves include waffles, sticky rice, porridges, and some beverages. In Bali, very young Suji leaves are sometimes cooked and eaten with rice. Suji leaves pair well with brown sugar, coconut, pandan, and vanilla. Whole, freshly harvested Suji leaves should be immediately used for the best quality and flavor. The leaves will also keep for a few days when stored loosely in a bag in the refrigerator, and can be dried for extended use.
Ethnic/Cultural Info
Suji leaves are notably used as a coloring in batik in Indonesia. Batik is an art form and practice of decorating cloth using colored dyes and wax. The word batik is derived from the Javanese word “tik,” meaning “to dot.” Several variations of this process have occurred independently throughout Asia, Europe, and the Middle East and were altered and influenced through increased exposure and trade. In Indonesia, batik became widespread with the influx of traders from Central Asia, Europe, the Middle East, and Asia on the island of Java, sometime around the 17th century. Suji leaves are used to extract their dark green coloring, and this juice is used to make a striking green dye for batik. The designs are created on fabrics such as cotton, linen, hemp, or silk, and many of the dyes used to color the fabrics are derived from natural ingredients found in the wild. In 2009, Indonesian batik was designated as an Intangible Cultural Heritage by UNESCO, a specialized agency of the United Nations that identifies, promotes, and protects cultural sites and practices worldwide.
Geography/History
Suji leaves are native to tropical regions of Southeast Asia and have been growing wild since ancient times. The origins of the species are largely unknown, as some sources suggest the native range may be broader, encompassing parts of northern Australia, tropical Africa, and the Pacific Islands. Despite its unclear origins, Suji leaves have been traditionally used as a medicine and coloring agent for culinary and cultural purposes throughout Southeast Asia for centuries. The leaves are mainly collected from wild and naturalized populations, which thrive in forests, alongside rivers or streams, rainforests, home gardens, and other tropical to subtropical regions, up to 1,000 meters above sea level. Today, Suji leaves are commercially produced on a small scale and are sold in local markets and select retailers in their growing regions. They are also dried and exported in limited quantities.
