As we continue baking our cakes, we’re going to keep testing (but at a lower level than the testing of our PPQ batches).
We’ll also make sure that we’re maintaining our baking equipment – we’ll keep our oven clean, we’ll routinely calibrate our weighing scales, and we’ll replace parts in our mixer as they’re needed.
We’ll keep a specific eye on the places where we know our cake making is at risk of variation.
But we’ll also watch to make sure that there isn’t variation coming from somewhere that we didn’t expect.
For example… maybe our cake icing stops setting like it’s supposed to, despite following all the relevant cake-icing parts of the recipe.
That’s a variation we weren’t expecting.
We need to go back and look at the process, figure out where that variation is coming from, and update our detailed recipe to stop that variation from happening again.