Sichuan cuisine, alternatively romanized as Szechwan cuisine or Szechuan cuisine (, Standard Mandarin pronunciation: ), is a style of Chinese cuisine originating from Sichuan Province. It has bold flavours, particularly the pungency and spiciness resulting from liberal use of garlic and chili peppers, as well as the unique flavour of Sichuan pepper. Some examples are Kung Pao chicken and Yuxiang shredded pork. There are many local variations within Sichuan Province and the neighbouring Chongqing Municipality, which was part of Sichuan Province until 1997. Four sub-styles of Sichuan cuisine include Chongqing, Chengdu, Zigong and Buddhist vegetarian style. UNESCO declared Chengdu, the capital of Sichuan Province, to be a city of gastronomy in 2011 to recognise the sophistication of its cooking. History Sichuan in the Middle Ages welcomed Middle Eastern crops, such as broad beans, sesame and walnuts. Since the 16th century, the list of major crops in Sichuan has even been lengthened by New World newcomers. The characteristic chili pepper came from Mexico, but probably overland from India or by river from Macau, complementing the traditional Sichuan peppercorn (). Other newcomers from the New World included maize (corn), which largely replaced millet; white potatoes introduced by Catholic missions; and sweet potatoes. The population of Sichuan was cut by perhaps three quarters in the wars from the Ming dynasty to the Qing dynasty. Settlers from the adjacent Hunan Province brought their cooking styles with them. Sichuan is colloquially known as the "heavenly country" due to its abundance of food and natural resources. One ancient Chinese account declared that the "people of Sichuan uphold good flavour, and they are fond of hot and spicy taste." Most Sichuan dishes are spicy, although a typical meal includes non-spicy dishes to cool the palate. Sichuan cuisine is composed of seven basic flavours: sour, pungent, hot, sweet, bitter, aromatic and salty. Sichuan food is divided into five different types: sumptuous banquet, ordinary banquet, popularised food, household-style food and snacks. Milder versions of Sichuan dishes remain a staple of American Chinese cuisine. The superior natural resources of Sichuan Province provided plenty natural resources for the development of cooking. The flow of Yangtze river (the third longest river in the world and the longest river in China) through Sichuan Province sat the fundamental food materials, spices, and water resources. Features The complex topography of Sichuan Province, including its mountains, hills, plains, plateaus and the Sichuan Basin, has shaped its