Well, it's not sourdough, but. . .
Received a stoneware bread cloche from DS1 and GF, and broke it in with the recipe from Chuck Williams that was enclosed. Country White Bread.
When they purchased it, they were told to pass on the message not to preheat the oven, so I didn't. However, the recipe definitely called for preheating. Does anyone have any experience with bread cloches and preheating?