Hi Kevin, if you're looking to make your loaves more sour, you can try letting the shaped loaves rest in the fridge overnight to encourage development of the acid that tastes sour to us. You can also try using a bread baking bowl or another bread baking crock like a Dutch oven to support the sides of the dough upwards as it rises. Either that, or try using a higher protein content flour, like bread flour for additional support. Happy baking! Kye@KAF

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