Hi David, do you happen to be shaping your dough on a greased work surface? Sometimes excess oil can cause the dough not to adhere together, creating a hole or tunnel that is expanded during baking. Another possible cause could be proofing at too warm of a temperature. I would aim to let your dough rise at no warmer than 80F.
September 11, 2022 at 10:36am
In reply to Brioche loaves are the only… by David (not verified)
Hi David, do you happen to be shaping your dough on a greased work surface? Sometimes excess oil can cause the dough not to adhere together, creating a hole or tunnel that is expanded during baking. Another possible cause could be proofing at too warm of a temperature. I would aim to let your dough rise at no warmer than 80F.