"According to an April 2022 research report published in the journal Physics of Fluids, it was proven impossible to split the cream filling of an Oreo cookie down the middle. The filling always adheres to one side of the wafer, no matter how quickly the cookie is twisted.[31][32]"
Methinks we need Lubey to give his expert opinion on this matter
I went searching for the different varieties .... fell into the Oreo rabbit hole ....