1 Having high or low cholesterol does not exclude a person from donating blood. 2  Potential blood donors may be temporarily prevented from donating if they have a low level of iron (hematocrit) in their blood.
Headline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.eadline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.
Use a food thermometer to check the temperature after cooking. All food should be reheated to 165 degrees Fahrenheit. Step 3 Put roasted food in the oven Put roasts, casseroles, and pasta dishes with sauce in an oven-safe pan and cover loosely with aluminum foil. Bake at 325 degrees and heat to 165 degrees.