Sourdough loaves

I ran out of yeast so I made a couple of loaves using just the sourdough sponge. I have added yeast in the past, but these loaves worked great without any added yeast. I wanted to make 2 loaves so I upped the recipe.

2 cups sponge
1 cup milk scalded
4 t salt
2 T sugar
4 T shortening
6 cups flour
Since this recipe was too large for the mixer I ended up kneading it by hand for a good 10 mins. I had to add flour as I went, the loaf was sticky. It rose in the afternoon and I formed 2 loaves and decided that since the loaf was good a stretchy I would try letting it rise on a sheet pan instead of using a loaf pan. Apparently it worked well. One of these is going to Jerrin.