Carambola

Carambola, also known as star fruit, is the fruit of Averrhoa carambola, a species of tree native to tropical Southeast Asia.^[1][2][3] The edible fruit has distinctive ridges running down its sides (usually 5–6).^[1] When cut in cross-section, it resembles a star, giving it the name of star fruit.^[1][2] The entire fruit is edible, usually raw, and may be cooked or made into relishes, preserves, garnish, and juices.^[1] It is commonly consumed in Southeast Asia, South Asia, the South Pacific, Micronesia, parts of East Asia, the United States, parts of Latin America, and the Caribbean. The tree is cultivated throughout tropical areas of the world.^[2]

Carambola fruits contain oxalic acid and the neurotoxin caramboxin. Consuming large quantities of the fruit, especially for individuals with some types of kidney disease, can result in serious adverse health effects.