Thanks, so I’m not under heating it then. I’m preheating on the fan oven, it’s all working as it should, I even had it apart the other week to change the fan element and gave it a full check over then.
When I tried the casserole it was hot as fuck, water sizzled inside it instantly and I was frit to burn myself handling it with a tea towel, but the loaf was really pale and flat at 30 mins. On the pizza stone it was as if the stone had sucked the heat out of the base of the dough, it didn’t really form a crust at all on the bottom, just barely sealed the dough.
I’m going straight at it in a preheated thin metal tin this time, see if that confirms pre-heating problems.