1:1 ratio water/flour for levain makes it easier to stir. Control sourness with how much existing starter to use.
Easy math: (100g levain water + 700g water) / (100g levain flour + 1000g flour) = 72.7% hydration. 25g salt / 1100 = 2.3% salt.
Stirring levain, water, and salt together first makes it homogeneous before adding flour.
I hand kneading over autolyse for initial gluten development because it guarantees a well mixed dough. It lets me do all the steps before bulk rise at once and fits well with a work schedule.
To measure bulk rise, I tear off a small piece of dough, put it into the bottom of a shot glass, and wrap a rubber band on the outside to mark the initial height. I bulk rise at room temperature between 5-8hrs.
I use Bulka round bannetons and a Lodge cast iron loaf pan if I cold proof overnight.
Thanks Sarah for sharing your starter with me!