I am not sure they are worth keeping. It is like carrying all the furniture you have ever lived with.
I will tell one. When you make beef stew, the simmer bubble should gently break the surface of the liquid at a slow and steady pace. Anything rapid and fierce will break apart the pieces of meat in a way that disperses a heavy meaty flavor from their flesh in bits that aren’t quite visible, but are more than the essence of themselves. Think about standing mid thigh in the ocean. You can see the ocean floor. If you stamp your feet, you might still be able to see a small shark that swims by your knees, but there is more than just a cloud of foaming water with a few plankton and minnows making it hard to see. There is heavy stuff now–dirt from the bottom–and if you drank that water, that is what you would taste. Stamping feet on an ocean floor and too high a flame give the same cloud.