1. After the 12-24 hours, mix the sweetener into the starter dough. Stir in 2 cups white or wheat flour.
2. As you add the remaining 4 cups of flour (more or less), the mixture will become too difficult to stir by hand, so you can either mix it in Kitchen Aid mixer with the bread dough hook, or you can use your hands to knead in the flour in the bowl. When most of the flour has been incorporated and the dough is no longer sticky, transfer it to a floured surface.
3. Knead the bread dough for 10-15 minutes more or until dough is soft and springy. Wash and dry your mixing bowl and spread with a little butter. Place dough into the bowl, cover and let rise in a warm place for 1 1/2 to 2 hours.
4. When dough has risen sufficiently, punch it down. Remove from the mixing bowl and divide the dough into two equal portions. Knead each ball a bit more and then place your dough into two bread pans, or shape as you like (I usually make mine into round/oval shapes) and place on lightly buttered cookie sheet. If you want to make smaller loaves instead, go ahead. If you make 2 loaves, they will be pretty large, so you could make 3-4 smaller ones instead.
5. It will take about 45-60 minutes for the loaves to approximately double in size, so you should preheat the oven to 350°F. about 30 minutes into this rising.
6. Slash the top of each loaf 3-4 times with a serrated knife (or make a criss-cross pattern, like I did) and then place in the oven. Bake anywhere from 25-50 minutes, depending on the size and shape of your loaves. The bread is done when golden brown and a tap on the bottom of each loaf makes a hollow noise.
7. At this point, it's probably very hard to wait, but allow your bread to cool on a wire rack for about 30 minutes before slicing. If you baked your loaves in bread pans, allow them to cool in the pans for 5 minutes before transferring to the rack. If you don't wait for the bread to cool, it will have a gummy texture when you slice it (and you'll probably end up ruining the lovely appearance of your loaves).