The Kitchen is celebrating Cinco de Mayo with Marcela Valladolid's Flambeed Tostados, Geoffrey Zakarian's Mango Picante Margarita, and cookbook author Samantha Seneviratne's Crunchy Peanut Pepper Cookies. Then, learn simple ways to spice up condiments and festive tips for a Cinco de Mayo party. Plus, the Kitchen hosts test just how hot your hot sauce is and reveal new twists on the classic buffalo flavor with hummus, potatoes and meatballs.