8 hours ago, pastrygirl said:
On 1/13/2018 at 9:03 PM, boilsover said:
The idea is that the pin has grooves/ridges that better place butter into the layers of dough.
This doesn't make sense to me. The butter is 'placed in the dough' by putting the butter block on the dough, folding it up, and rolling...
Well, let me offer an idea that makes sense to me. I suggest that, when rolled with a smooth pin, the forces are such that the dough (paste and butter layers alike) is moved almost completely in the direction in which the pin is rolled. With the longitudinal ridges (which are rounded), a pushing motion along with downward pressure will exert both forward and rearward forces in all the layers. This might mean more consistent thicknesses of paste and butter layers after the chosen number of turns.
This may well be part of what was said about avoiding tearing; then again, perhaps there's more to it.