Steamed Turbot

Steamed Turbot

　　Steamed Turbot: Turbot is a flat, dark-colored fish with both eyes on the left side, resembling a flounder. Known as turbot, this seafood species is one of the few that can yield four fillets. While this method of preparation is a favorite among discerning diners, most people prefer it steamed.

　　Turbot is a type of European flatfish. The name "duobao" (多宝), meaning "many treasures," is a transliteration of its English name "turbot" and also carries auspicious connotations, making it popular among Cantonese and Hong Kong people who favor symbolic meanings. Its scientific name is Scophthalmus maximus, a demersal marine fish belonging to the family Scophthalmidae under the order Pleuronectiformes.

　　Turbot has a flat, diamond-shaped yet nearly round body, with both eyes located on the left side. The eyed side (dorsal) is darker, appearing brownish or sandy in color, which can vary in shade depending on environmental and physiological conditions. Although it appears scaleless on the eyed side, it is actually covered with fine, rough-textured keratin scales. The blind side (ventral) is smooth and white. It has a large mouth, a short snout, and an oblique, wide gape. The jaws are well-developed and symmetrical, with the upper jaw being shorter and the lower jaw slightly longer and extending forward. The head length is twice that of the jaw length. Both sides have well-developed, fine, curved teeth but no canines, while the vomer also has teeth. The dorsal, anal, and caudal fins are well-developed and connected by soft fin membranes. The body length to height ratio is about 1:0.9. Turbot grows rapidly and can reach a relatively large size—according to records, the largest individual in a natural population exceeded 1 meter in length and weighed 54 kilograms. Typically, individuals are 0.4–0.5 meters long and weigh 5–6 kilograms. This species spawns in batches, and egg production is closely related to the size of the female fish, averaging around 1 million eggs per kilogram of body weight.

　　Nutritional Value

　　Turbot grows quickly—from hatching to reaching market size (0.8–1 pound)—in just 10–12 months. It offers high economic returns, efficient feed conversion, strong disease resistance, low oxygen consumption, and suitability for high-density farming, making it a promising aquaculture species. Its skin and fin edges are rich in collagen, and it has small head and tail fins with cartilaginous fin rays. It contains no small, spiky bones, has a small internal organ mass, high meat yield, thick and tender muscle, and high gelatinous protein content. It tastes delicious, is highly nutritious, and is excellent for nourishing the skin and promoting beauty. It also helps nourish kidneys, strengthen the brain, boost vitality, and enhance energy. Regular consumption can improve overall health and immunity. In China, it is commonly steamed or stewed and is also ideal for making sashimi. Its head, bones, skin, and fins can be used to make soup. Turbot is a cold-water fish from Northern Europe and is sensitive to seawater conditions such as temperature. Its lethal upper temperature limit is 28–30°C, and the lower limit is 1–2°C. The optimal growth temperature range is 14–17°C, with a maximum tolerable temperature of 21–27°C and a minimum of 7–8°C. It can tolerate salinity levels up to 40‰ and down to 12‰. In the wild, juvenile turbot feed on crustaceans, while adults prey on small fish and shrimp. In aquaculture, they are typically fed high-energy pelleted feed after training. In China, turbot can be farmed not only in the Shandong Peninsula but also in the Liaoning region of the Bohai Bay through artificial insemination, with farming scale and output comparable to that of the Shandong Peninsula.