I've tried 3 or 4 different recipes for ciabatta and all have basically the same ingredients, but for some reason I come up with the same result. Soft crust and a dense center. Everything goes fine during the mixing process, which I come out with this sticky dough, but my final product just doesn't come out right. Where am I going wrong? What do I have to do to get that crispy, rustic crust and center full of limitless air pockets.