Stir until too dificult to mix with a fork, then use your hands to bring the ingredients together into a cohesive, smooth dough, about 1 minute. The dough should be slighlty tacky, but if it's too sticky to work with, your starter is over-hydrated and you need to correct it. Add a bit more flour to the dough to fix the current problem.
Grease the bowl and cover with a non-permeable, solid covering. (pot lid, sheet pan, plastic wrap, etc. NOT a kitchen towe!
Rise at room temp for 12 hours, or until double. If using robust starter, you may achieve doubling in 6-8 hours or less.
On a floured surface, gently stretch and pat (de-gas) the dough into a rectangle about the width of your loaf pan. Shape the loaf as you prefer. I use the King Arthur method.
Place the loaf in a greased loaf pan. Cover and rise 2 hours or until double. Robust starters may only need 1 hour
BAke on the center rack of a preheated 375° oven for 50 minutes, or until the internal temperature is 195°
Cool fully before slicing, ideally 8 hours