Keh graduated with a doctorate's degree in Food Science. He gained fame as an entrepreneur after crafting the "perfect pizza" and opened his own five-star restaurant, Ambrosia. The use of his secret flavor enhancer enabled him to win PizzaPalooza five years in a row and caused Ambrosia's business to skyrocket, stealing customers from local pizzerias and forcing Béchamel's family's pizzeria to permanently close. But he doesn't want to talk about his past but will being hits of it.