What do these loaves tell you?
Both were made using the same method. White flour, 68% total hydration, levain 100% hydration, 1kg of total bread dough each, 12g of salt. I mixed the water with flour and salt and left it on the counter. 2 hours later I added the levain that was on top, more than doubled in size, mixed with the rubaud method, 5 minutes, rest, 5 minutes more. I left in my oven with the light on and the temperature was at 25 ° C, I did stretch and fold at 30, 60, 120 and 180 minutes, I let it rest for another 1 hour and then shaped it and put it in the refrigerator (8 ° C) . After 13 hours I baked the first loaf (the second in the photo) in an iron pan with a lid for 20 minutes and about 25 minutes without a lid. The oven was preheated together with the pan to 250 ° C and reduced to 230 ° C when the lid was removed, but due to the opening the thermometer marked 200 ° C at this stage. Then I baked the other bread and the result was very different as you can see in the photos. I've been thinking about these breads since Sunday, trying to understand what happened and how to get better. The best conclusion I've come so far was that the first fermentation was short and the temperature in my refrigerator is very low and prevented the fermentation going on. The first loaf I baked was better, but I still did not think it grew so much for a 1kg loaf.