Slow-cooker preparation involves the use of a slow-cooker to make a STEW. Slow-cookers are kitchen appliances that cook food at a low temperature over a long period of time, allowing for the flavors to blend and the food to become tender. Stews are dishes made by simmering vegetables and meat in a liquid, such as broth or stock, for an extended period of time. Slow-cooker preparation is a great way to make a delicious STEW with minimal effort.