Glutinous rice

Glutinous rice (Oryza sativa var. glutinosa or Oryza glutinosa; also called sticky rice, sweet rice, waxy rice, botan rice, biroin chal, mochi rice, and pearl rice, and pulut)[1] is a type of short-grained Asian rice that is especially sticky when cooked. It is called glutinous (< Latin glūtinōsus)[2] in the sense of being glue-like or sticky and not in the sense of containing gluten. While called "sticky," it is not to be confused with the other varieties of Asian rice, which become sticky to one degree or another when cooked.

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Cultivation

Glutinous rice is a type of rice grown in Laos, Myanmar, Vietnam, Bangladesh, China, Japan, Korea, Philippines, Thailand, Taiwan, Cambodia and Indonesia. An estimated 85% of Lao rice production is of this type.[3] The rice has been recorded in the region for at least 1,100 years. The improved rice varieties (in terms of yield) adopted throughout Asia during the Green Revolution were non-glutinous, and Lao farmers rejected them in favor of their traditional sticky varieties. Over time, higher-yield strains of glutinous rice have become available from the Lao National Rice Research Programme.

By 1999, more than 70% of the area along the Mekong River Valley were of these newer strains. In China, glutinous rice has been grown for at least 2,000 years.[4] According to legend, it was used to make the mortar in the construction of the Great Wall of China. Chemical tests have confirmed that this is true for the city walls of Xian.[5] Sticky rice is used in recipes throughout Southeast and East Asia.

Constituents

Glutinous rice does not contain dietary gluten (i.e. does not contain glutenin and gliadin), and should be safe for gluten-free diets. It is distinguished from other types of rice by having no (or negligible amounts of) amylose, and high amounts of amylopectin (those are the two components of starch). Amylopectin is responsible for the sticky quality of glutinous rice. The difference has been traced to a single mutation that was selected for by farmers.[4][6]

Glutinous rice can be used either milled or unmilled (that is, with the bran removed or not removed). Milled glutinous rice is white in color and fully opaque (unlike non-glutinous rice varieties, which are somewhat translucent when raw), whereas the bran can give unmilled glutinous rice a purple or black color.[7] Black and purple glutinous rice are distinct strains from white glutinous rice. In developing Asia, there is little regulation. Governments have issued advisories about toxic dyes being added to color adulterated rice. Both black and white glutinous rice can be cooked as grains or ground into flour and cooked as a paste or gel.

Foods

Burmese traditions

Glutinous rice, called kao hnyin (ကောက်ညှင်း), is very popular in Myanmar (also known as Burma).

Chinese traditions

In Chinese, glutinous rice is known as nuòmǐ (糯米) or chu̍t-bí (秫米) in Hokkien.

The Chinese dish, nuòmǐ fàn (糯米飯), is steamed glutinous rice usually cooked with Chinese sausage, chopped Chinese mushrooms, chopped barbecue pork and optionally dried shrimp or scallop (recipe varies depending on the cook's preference).

Zongzi (Traditional Chinese 糭子/糉子, Simplified Chinese 粽子) is a Chinese dumpling consisting of glutinous rice and sweet or savory fillings wrapped in leaves, which is then boiled or steamed, commonly eaten during the Dragon Boat Festival. No mai gai (糯米雞) is a dim sum dish consisting of steamed glutinous rice with chicken in a lotus-leaf wrap and steamed. It is served as a dim sum dish in Hong Kong, Singapore, and Malaysia. Ba bao fan (八寶飯) or "eight treasure rice" is a dessert made from glutinous rice, steamed and mixed with lard, sugar, and eight kinds of fruits or nuts.

Glutinous rice is also often ground to make glutinous rice flour. This flour is made into niangao and sweet-filled dumplings tangyuan, both of which are commonly eaten at Chinese New Year. It also sometimes used as a thickener and for baking.

Filipino traditions

In the Philippines, glutinous rice is known as malagkit (literally "sticky" in Tagalog, cognate to Malay melekit); milled glutinous rice is known as galapong. Milling, that is, washing and soaking the rice first, and then proceeding to milling, is generally preferred. This removes the powdery texture found in glutinous rice that has been dried first and milled as flour.

Glutinous rice cooked in coconut or banana leaf wrappers are steamed to produce suman, of which there are many varieties depending on the region. Some of the common toppings are bukayo, grated mature coconut cooked in sugar; coconut jam; and freshly grated coconut. Some regions eat suman as a snack with ripe mangoes or bananas. In suman sa lihiya (lye), the rice grains are treated with a solution of lye and dried. The grains are put into a banana leaf cone or coconut leaf wrapper and steamed. The rice may be mixed with sugar, coconut milk, or other grains such as millet. Malagkit is also used in puto, or steamed rice cakes, of which numerous variations exist.

Bibingka is a general term for sweet rice cake, which is mainly glutinous rice cooked with coconut milk. Bibingka is often associated with the Philippine Christmas season. Another common Philippine Christmas tradition includes puto bumbong, a suman-like sweet dish steamed in special containers with bamboo tubes, and served with butter, grated coconuts, sugar, and sometimes toasted sesame seeds. Puto bumbong traditionally uses a special heirloom variety of glutinous rice called pirurutong, which has a naturally purple colour.

Another traditional Filipino sweet snack similar to Japanese mochi is called palitao.

Glutinous rice is also used in gruel-like dishes such as champorado, which is cooked with cocoa powder and sweetened. Milk is usually added, and tuyo is served with it as a counterpoint. Lugaw, goto, and arroz caldo, are all variants of rice porridge dishes, featuring glutinous rice mixed with regular rice.

Bilo-Bilo or Ginataan uses glutinous rice. It is a sweet, thick soup made of coconut milk, jackfruit, sweet potatoes, plantain, sago pearls, and the bilo, or galapong shaped into balls.

Japanese traditions

In Japan, glutinous rice is known as mochigome (Japanese: もち米). Prepared as rice flour, it is known as mochiko. It is used to make mochi, a traditional rice cake prepared for the Japanese New Year but also eaten year-round. See also Japanese rice.

Korean traditions

In Korea, glutinous rice is called chapssal (Hangul: 찹쌀), and its characteristic stickiness is called chalgi (Hangul: 찰기). Cooked rice made of glutinous rice is called chalbap (Hangul: 찰밥) and rice cakes (Hangul: 떡, ddeok) are called chalddeok or chapssalddeok (Hangul: 찰떡, 찹쌀떡). Chalbap is used as stuffing in samgyetang (Hangul: 삼계탕).

Lao traditions

Glutinous rice is the main rice eaten in Laos, where it is known as khao niao (Lao: ເຂົ້າໜຽວ): "khao" means rice, and "niao" means sticky. It is cooked by soaking for several hours and then steaming in a bamboo pot or huat (Lao: ຫວດ, Thai: หวด). After that, it should be turned out on a clean surface and kneaded with a wooden paddle to release the steam; this results in rice balls that will stick to themselves but not to fingers. The large rice ball is kept in a small basket made of bamboo or katip (Lao: ກະຕິບ). The rice is sticky but dry, rather than wet and gummy like non-glutinous varieties. The fingers of the right hand are used to eat it by wadding the rice.

Laotians consume glutinous rice as part of their main diet; they also use toasted glutinous rice (khao kua) to add a nut-like flavor to many dishes. A popular Lao meal is a combination of Lao grilled chicken (ping gai), Lao papaya salad (tam mak hoong), and Lao sticky rice (khao niao).

Khao niao is also used as an ingredient in desserts. Khao niao mixed with coconut milk can be served with ripened mango or durian. Khao tom is a steamed mixture of khao niao with sliced fruits and coconut milk.

Malay and Indonesian traditions

In Singapore, Malaysia, and Indonesia glutinous rice is known as pulut, and also known as ketan in Indonesia. It is usually mixed with santan, meaning coconut milk in Malay, along with a bit of salt to add some taste. It is widely used during the Raya festive seasons as traditional food, such as

Pulut will also be used in certain famous traditional local desserts, known as kuih (Peninsular) or kue (Insular), such as kue lapis, wajik (or wajit), and dodol.

Thai traditions

In Thailand glutinous rice is known as khao niao (Thai: ข้าวเหนียว in Central Thailand and Isan; and as khao nueng in Northern Thailand (Thai: ข้าวนึ่ง). Northern Thais (Lanna people) and northeastern Thais, as most other Tai peoples traditionally eat glutinous rice as their staple food. The exceptions are Southern and Central Thais, and northeastern Thais from Surin Province and neighboring areas who were influenced by the Khmer-Thai people and favor non-sticky Khao chao.

Vietnamese traditions

Glutinous rice is called "gạo nếp" in Vietnamese. Dishes made from glutinous rice in Vietnam are typically served as desserts or side dishes, but some can be served as main dishes. There is a wide array of glutinous rice dishes in Vietnamese cuisine, the majority of them can be categorized as follows:

Glutinous rice can also be fermented to make Vietnamese alcoholic beverages, such as rượu nếp, rượu cần and rượu đế.

Beverages

Other uses

In Malaysia, glutinous rice is used to make a cracker called inang-inang.

In Indonesia, it is called rengginang. There are two varieties of this snack, salty and sweet.

See also

References

External links