The slow cook function has warm, simmer, low, and high settings—warm is for keeping already cooked food at a palatable 165°F for up to 8 hours, while simmer, low, and high cook at preset temperatures of 185°F, 200°F, and 212°F, respectively. Food temperature AccordionItemContainerButton LargeChevron To assess how a slow cooker would treat both meats and veggies, our primary food-based test was making Slow Cooker Green Chicken Chili, which includes whole chicken thighs (that ideally shouldn't hit an internal temp above 195ºF) and large cubes of sweet potato, which can easily end up either intact or mushy.