A smooth–skinned stone fruit similar to, but distinctively different in flavour to, its relative the peach. How the nectarine originated is a mystery: peach trees sometimes bear nectarines, and vice versa. The modern fruit is mainly cultivated in California, where over 150 varieties grow. Their colour ranges from silvery white or yellowy orange to pinkish red. The white–fleshed varieties are considered the best and are usually the most expensive. Nectarines can be used in recipes instead of peaches, although are best eaten fresh out of hand.