Rambutan is a tropical fruit that’s known for its striking, spiky appearance. Its outer skin is covered in soft, hair-like fibers, giving it a unique, “hairy” look. The skin can be red, yellow, or orange when ripe, with the spines being greenish or yellow. When peeled away, the flesh inside is translucent, white, or pale pink, and has a juicy, sweet flavor with a subtle tanginess.