part of berry is white and the other part is ripe

Whitney Cranshaw, Colorado State University, Bugwood.org

Updated: March 26, 2021

White drupelet* disorder-Part of berry is white

Sunburn (a.k.a white drupelet disorder) of bramble fruit may occur during periods of dry, sunny, breezy, hot weather. Excess UV radiation scalds the fruit. Individual drupelets become white or tan in color and hard. It's most frequently seen on the east side of rows oriented north to south.

If a small percentage of the drupelets are affected the fruit is still edible and can also be used in recipes. 

 *Drupelet – A small drupe (a one-seeded, fleshy fruit), the unit making up the fruit (Examples - raspberry, blackberry).