rambutan. The soft, flexible exterior shell is covered in stiff, hair-like bristles. While the exterior makes it seem larger than the lychee, the inner fruit is actually smaller. Rambutan flesh is juicy, milkywhite, translucent in color, with a grape-like, gelatinous texture surrounding a central seed with and almond- like taste. The flavor of a rambutan is more acidic than the lychee, sweet and very aromatic.