Behind the scene, in stage terms, is all that goes on behind what you see on stage as the audience. What you see on stage is more like the tip of the iceberg. You see only one-eighth of what it is. The rest of the seven parts of the iceberg remains unseen.
When it comes to cooking, I am reminded of the early days of trying my hand at the stove. The earliest was probably when we were in our single digits and would have bon-bhojon, i.e. cooking in the front yard or backyard with a bit of help from the cook or an adult.