What a treat to have donut peaches in the fruit share today.  Here's a bit of info on donut peaches, via hormel.com (of all places!)

Donut Peach

A variety of white Peach that originated in Asia. The name was derived from the appearance, which looks like a cake donut. The Donut Peach is approximately 1 to 2 inches in height and 2 to 3 inches in diameter. The outer skin has a pale yellow and red color that covers a white inner flesh that is tender, juicy, and sweet tasting, similar to a nectarine. This Peach has a low acid to sugar ratio, so it is sweeter than the orange flesh variety. It is an excellent addition to salads, desserts, crepes, and other dishes requiring fruit.  Store in a refrigerator for no more than 3 to 5 days.