That is REALLY cool...but you dropped the ball. ("You need a cake tester? It just so happens that I AM a cake tester. Show me a cake. I will test it for you.") Your version is really fine (brilliant idea, by the way, and really nicely done), but did you get cake? Did you GET CAKE? (Sorry...almost dinner time and I am hungry, and now I don't want dinner. I WANT CAKE!)
Really a beautiful solution - congrats, Mike. (And...well...did you?)