Green dragon (Thanh long)

Green dragon is the name of a newly cultivated fruit. It is rather big, weighs from 200 to 500 grams, and has pink or dark-red colour. The ripe fruit looks like the kohlrabi cabbage and has an oval shape.
When ripe, the fruit peels as easily as a banana. Its pulp is white and gelatinous. The pulp contains many seeds that cannot be extracted. The seeds taste like cactus, giving the fruit a sweet and sour taste.
Before 1945, green dragon fruits were not sold in southern markets. It is said that Americans brought green dragon fruits to the south. From Phan Thiet to Nha Trang or from Ninh Hoa to Buon Ma Thuot, bushes of green dragon fruits can be seen climbing to tree trunks in gardens and even on doors.
Different from any other southern fruit, its harvest season is particular; fruits become available in markets in October, November, April, and May. They are more expensive in October and April, since there are smaller quantities available.