Probably better not to answer peoples questions with guesses Mike,
there's plenty of knowledgeable people here who can give real answers
or maybe you're such a good guesser Mike that you always get the right
answer so making your contribution worth listening to. If so maybe you
take up a column in "Journal of Applied Physics" or "The American
Journal of Theology".

Jim

On 1 Apr, 23:39, Mike Romain wrote:

The roll method you describe would likely be aiming to get holes in the
bread. *Those concentrated points of unmixed yeast should grow a CO2
bubble I would guess.

Did you try it?

Mike
Some bread photos:http://www.mikeromain.shutterfly.com