I again followed the 1-2-3 sourdough recipe but this time, I used 9 oz starter, 18 oz water, and 9 oz whole wheat flour, 9 oz bread flour and 9 oz all purpose flour (I ran out of bread flour). I mixed until moist and let rest 1-2 hours. did 3 stretch and folds over several hours and then put it in the fridge for an overnight retard (that ended up being almost 24 hours; I punched it down after 12). I shaped it, let it rise covered on the counter for 2 and a half hours or so. Baked on a stone with steam, 500 °F for 2 minutes and then 450 for 38 more. Looks good. Tastes good, but still not what I would call "sour." Very complex flavor. Still not getting the big gaping artisan holes, but this loaf gets an A in my book.