In case you are not into baking with sourdough here is the original recipe. It is simple and makes a super flavorful loaf. Do not get intimidated with the time it takes. That is what makes it so flavorful.
I followed these instructions that I had written up long ago to convert recipes to sourdough. The original recipe I had was in cup measure so I converted it to weight. I got 560 gm of flour and 430 gm water. Once you have these two numbers you can easily convert the recipe. If you are interested the math is as follows: First I calculated 40% of 560 and got 112 or round to 110. This is the weight of starter needed for this recipe. Since my starter is 50% flour and 50% water I reduce both water and flour by 110/2 which is 55 gm. My new flour by weight is 560-55=505 gm or rounded to 500 gm. The water needed by weight is 430-55=375 gm.
You will need for 1 loaf
110 gm 100% sourdough starter
505 gm flour (I used whole wheat flour, you can use 50% all purpose or any combination)
375 gm water
10 gm salt
3 tbsp. oil (vegetable oil or olive oil)
Mix all the ingredients in a bowl and keep aside. After 15 minutes, reach over the far side of the dough and pull it over the top. Turn the bowl 45 degrees and repeat. Repeat two more time and keep aside. Fold and turn every 15 minutes another 3 times. Cover the bowl and let it rest for 4-6 hours.
Keep you loaf pan ready. Remove the dough from the bowl to a floured working surface. Fold over from both sides and place seam side down in the loaf pan. Cover and place in the refrigerator overnight.
When you are ready to bake preheat the oven to 375 F. When the oven is heated remove the loaf from the refrigerator and take off the cover. Score the top of the loaf with a sharp blade or knife. Sprinkle a little flour over the top to add some interest. Bake for 50-60 minutes. Check after about 30 minutes and if the top is browning too quickly, tent it with foil.
Take the loaf out of the oven and let it sit for a couple minutes. Slide the loaf out of the pan and cool it on a cooling rack.
Slice and enjoy!