Hey all I'm making a pot roast in a crock pot, and I followed a recipe, winged it a little but every time I have a lot of veggies and other items that are not submerged by liquid. In my previous efforts I've always just added more water until everything was covered. However now it's got me wondering, does everything need to be covered with liquid or will all the ingredients eventually melt down into one another over night. By the way I'm making it this evening and letting it cook on low until tomorrow evening. Either way should I go add more water until it's all covered, or just leave it be with everything still sitting on top?