This was exciting to take. There was a pile of Douglas Fir cones near our campfire pit in Willingdon Beach, Powell River this July. Throwing them into the fire the initially burned; however, they stayed as formed cones for a long time.
To get this shot, I had to take several shots with different shutter speeds. I also tried with flash and you could see in that image that they were actually ashen coloured. When the fire finally died down, these cones were completely ash.