In the Season 10 premiere, a grilled pork tenderloin with an apricot serrano salsa is prepared by Marcela Valladolid; and later, Katie Lee uses the leftovers to make quesadillas. Also: tips for keeping produce fresh; tricks for a better backyard; nutritionist Joy Bauer's mini-chocolate-chip ice cream; Chadwick Boyd's radish-and-snap-pea bites with brown-butter-rosemary drizzle; and Geoffrey Zakarian's pina perfected cocktail.