This is one reason we chose the form factor that we did for Cinder, because we can automatically measure thickness. We found that's something rather hard for people to do, no one really wants to hold up raw meat to a ruler app on their phone, and yet is crucial to time estimation. Then we ask you what we don't know, so in the app you'd say: Chicken breast. We've also done some cool things to know when it's done, like how a rice cooker clicks off.