We highly recommend allowing the Brava to cool down. The core of the Brava includes sensitive electronics and sensors that help to give your food that perfect cook. The cooling fan activates to prevent those sensitive materials from overheating. After the brief, sub-five minute, cooling period you're good to keep cooking!
You can always opt to cook your next meal even if the Brava has not fully cooled. However, this can affect the results of your cook.