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