In this episode, we look at three amazingly versatile ingredients: peppers, onions and butter. Host Francis Lam visits the home kitchen of Latin food scholar and chef Maricel Presilla. Her latest book is Peppers of the Americas: The Remarkable Capsicums that Forever Changed Flavor. She shows Francis how she makes a few essential pepper-rich sauces and dishes. Speaking of peppers, can't find Hatch green chiles for your chili? Have no fear; America’s Test Kitchen found a fantastic pepper workaround for their Colorado Green Chile recipe. Francis talks about the search for world-class butter with writer Alex Halberstadt. And contributor Joe Yonan talks to Kate Winslow, co-author of Onions, Etcetera, about one of the most underappreciated vegetables of all time. Bonus video: Francis Lam on how to chop onions.