is assimilated into another; for example, Chinese restaurants in Malaysia often serve Malaysian dishes. Food from one culture is sometimes cooked using styles taken from another. This means that although many Malaysian dishes originate from another culture, they have their own identities. Often the food in Malaysia is different from the original dishes; for example, Chinese food is often sweeter in Malaysian versions than the original. The Peranakans, Chinese who moved to Malaysia centuries ago, have their own unique cuisine that Chinese cooking techniques with Malay ingredients. During a dinner food is not served in courses, but all at once. Rice is popular in many Malaysian dishes. Chilli is commonly found in Malaysian dishes, although this does not make them spicy. Noodles are common. Pork is rarely used in Malaysia, because of the large Muslim population. Some celebrations have food associated with them, and mooncakes are often eaten during Mooncake Festival. Clothing As of 2013 most Muslim Malaysian women wear the tudung, a type of hijab. This use of the tudung was uncommon prior to the 1979 Iranian revolution, and the places that had women in tudung tended to be rural areas. The usage of the tudung sharply increased after the 1970s. as religious conservatism among Malay people in both Malaysia and Singapore increased. Several members of the Kelantan ulama in the 1960s believed the hijab was not mandatory. By 2015 the Malaysian ulama believed this previous viewpoint was un-Islamic. By 2015 Malaysia had a fashion industry related to the tudung. By 2015 Muslim Malay society had a negative reaction to Muslim women who do not wear tudung. Norhayati Kaprawi directed a 2011 documentary about the use of tudung in Malaysia, "Siapa Aku?" ("Who am I?"). It is in Malay, with English subtitles available. Holidays Malaysians observe a number of holidays and festivities throughout the year, on both the federal and state level. Other festivals are observed by particular ethnic or religion groups, but are not public holidays. The main holy days of each major religion are public holidays. The most widespread holiday is the "Hari Merdeka" (Independence Day), otherwise known as "Merdeka" (Freedom), on 31 August. It commemorates the independence of the Federation of Malaya. This, as well as Labour Day (1 May), the King's birthday (first Saturday of June), and some other festivals are major national public holidays. Federal Territory day is celebrated in the three Federal territories