Potatoes
Pota-TOE, po-TAH-toe. Starchy, waxy, all-purpose? Variety matters and each type of potato behaves differently to different methods of cooking. The link below goes into more depth about the wide variety of potatoes and the video demonstrates cooking each type and comparing how they held up.
Not sexy, but super helpful!
https://www.huffpost.com/entry/potato-varieties_n_1105586