These potatoes are stuck together.
Really, I washed it.
Yes, you can eat these roots. They just take a lot of grinding or cooking. And Gretchen says these ones are too old and tough.
The new shoots of catbriar are much more tasty than their roots, and you can just break them off while walking in the woods.
This particular clump I dug up with the tractor dirt scoop while filling potholes in the driveway.