Listen, this is just a made up situation. Nectarinism is a recessive trait. In pollination, two parent peaches can make a nectarine. Two parent nectarines always make a nectarine.
What you’ll see below describes an inefficient - if benign - way to acquire nectarines. Not an abomination, barely disingenuous in the free market (unless you upsell the shaved peaches, then you’re bad).
But it’s cool, okay? In fact, a fun game to play at your kid’s next birthday party might be to “shave” peaches with Cool Whip and pretzel rods.