Crockpot = modern invention to replace ole-fashioned cast iron dutch oven in the oven or fireplace. Low heat simmers (kinda) all day. Good for roast beef or chicken without much-liquid to stews and chili. Wonderful invention. We have 'em in 3 sizes. Some aren't immersible (the smaller & cheaper ones). Some have a separate ceramic 'pot' that separates from the housing unit. Wouldn't be without one. first gift to college kids when moving away to school. Teach 'em how to buy cheaper cuts and CROCK POT 'EM.!