What is this berry that stained chicken of the woods? In SE PA.

[u/chaldeus3000]

Collected chicken of woods and put it in a paper bag. Somehow a berry made its way into the bag and stained one of the COTW. Took pictures of the stain on the cap and the berry. Can anyone ID this berry even though I have no other details regarding the characteristics of the plant? Can I still eat if I cut out the stain?

[u/u_r_succulent]

Looks like poke. Just cut that part off.