we made ham, cheese and potatoes. Can the left overs be eaten this Sunday? For best quality and to ensure safety of food, I always recommend that leftovers be eaten within 4 to 5 days. Freeze the food if you think that you won't be able to eat it in that time. Remember, when in doubt, throw it out. Cooking with a slow-cooker; is it microbiologically safe? The slow cooker cooks foods slowly at a low, safe temperature - generally between 170F and 280F. The direct heat from the pot, lengthy cooking and steam created within the tightly-covered container combine to destroy bacteria and make the slow cooker a safe process for cooking foods. It is important to always start with thawed, not frozen food. Smaller pieces of food ensure thorough cooking. Do not use the slow cooker for larger pieces like roasts or whole chickens, etc. And, fill the cooker no less than half full and nor more than 2/3 full. Can I put in the refrigerator some left over spaghetti sauce (not eaten but has been warmed up) and heat it up again the next day or in two days? As long as the spaghetti sauce did not sit a room temperature for more than 2 hours, you can put it in the refrigerator and use it the day after or in two days.  Leftovers should be cool down right away and the best way to do so is to put them in the refrigerator as soon as