For anyone travelling through the scenic George / Knysna area, one of the attractions is, or always has been, the Outeniqua Choo - Tjoe, one of the last remaining steam trains in Africa. (blog.sa-venues.com)
Once baked, cut em open to get any remaining steam out — again to ensure the buns don't collapse. (topwithcinnamon.com)
Let the pressure release naturally for at least 15 minutes, then move the Pressure Release to Venting to release any remaining steam. (epicurious.com)