Thai cuisine and the culinary traditions and cuisines of Thailand's neighbors have mutually influenced one another over the course of many centuries. Regional variations tend to correlate to neighboring states (often sharing the same cultural background and ethnicity on both sides of the border) as well as climate and geography. Northern Thai cuisine shares dishes with Shan State in Burma, northern Laos, and also with Yunnan Province in China, whereas the cuisine of Isan (northeastern Thailand) is similar to that of southern Laos, and is also influenced by Khmer cuisine from Cambodia to its south, and by Vietnamese cuisine to its east. Southern Thailand, with many dishes that contain liberal amounts of coconut milk and fresh turmeric, has that in common with Indian, Malaysian, and Indonesian cuisine.