Today I brought my two first sourdough loaves into the world. I used the starter method from Peter Reinhart, then the extra-tangy sourdough load recipe from King Arthur Flour, except that I baked them in a Dutch oven à la Jim Lahey. Okay, so I'm satisfied considering this is my first time, but the bottoms were burnt!! I also need to figure out how to get loftier loaves. Please help!