My elegant Madrid friend Lourdes Plana is the ultimate foodie. A former editor of Restauradores (a restaurant magazine) and a recipe columnist for a very popular women’s weekly called Mía, she now organizes Madrid-Fusión, a high-profile food conference that draws the world’s greatest chefs. She is the kind of cook who can turn something as basic as strawberry ice cream into a sensational treat. Unlike most strawberry ice creams, which rely on an egg-based cust