I made up another batch of sourdough this time I added a cup of sour cream mashed potatoes we had left from one day or so ago.It rose overnight and I kneaded it this morning and panned it up,it rose over the top of pan in 2 1/2-3 hours.It baked at 350* for 35-40 minutes and was really tall like 4 1'2 inches and held up well after it was turned out.Will cut it later today or tomorrow.