DetailsRambutans are oval to oblong in shape, typically about 5 cm in diameter, and weigh 30–50 grams. Depending on the variety, they are a vivid red, pink or yellow fruit covered in soft spines. The flesh, usually transparent or white in colour, surrounds a single seed. Some varieties are free stone while others have flesh that clings to the seed. Taste Sweet, juicy flesh with a mildly acidic flavour that is very refreshing. 500 gm.