One mistake many bakers make is to not measure the temperature of the water. This is often times why bakers do not obtain ideal results when baking sourdough bread. This is such an easy thing to do. Here's the formula, based on an ideal dough fermentation temperature of 78° F: goal temperature (78° F) multiplied by 4 = 312° F. From that number, subtract the temperature of your flour, the temperature of your kitchen where the dough will sit, the temperature of your starter, and heat caused by friction from kneading (which is 6° F). The result is the temperature you want your water to be at when you mix it with the dough to autolyse.