[header] How to make a chocolate yule log [title] Preheat your oven to 350ºf (177ºc) or gas mark 4. [step] Lower the rack to the center of your oven. [title] Spray a 17 " x 20 " (40 cm x 30 cm) pan with cooking spray. 
[step] Place a piece of parchment paper onto the sprayed pan, and spray the parchment with cooking spray. [title] Fill a saucepan halfway full of water.