Flash points are determined experimentally by heating the liquid in a container and then introducing a small flame just above the liquid surface. The temperature at which there is a flash/ignition is recorded as the flash point. Two general methods are called closed-cup and open-cup. The closed-cup method prevents vapors from escaping and therefore usually results in a flash point that is a few degrees lower than in an open cup.
There are two methods for roasting a whole chicken: Regular method: 1  Preheat oven to 350 degrees F (175 degrees C). 2  Roast whole (thawed) chickens for 20 minutes per pound, plus an additional 15 minutes.
Cooking the Chicken. Chicken should be roasted for 20 minutes per 450 g / 1 lb plus an extra 10-20 mins to ensure it is cooked right through. If possible, use a meat thermometer pierced into the thickest part of the breast reaching a temperature of 75Â°C / 165Â° F to ensure thorough cooking.