You should be aware that newer crockpots generate a higher heat on the "low" setting than older ones (apparently Rival is particularly bad in this respect). Ppl set the crockpot to "low", expecting that low simmer that Andy refers to and find that the liquid gets much hotter.Andy M. said:... just simmer it. Simmering will just have a few bubbles coming up to the surface of the liquid rather than a full rolling boil.