Students in the half-day cooking classes in a kitchen in the old city have the option of taking a guided tour of La Boqueria before the class begins. It's a great way to get a real feel for Spanish foodstuffs and for the discerning way that Spanish cooks select their ingredients. Classes usually prepare two tapas, often tortilla Española and pa amb tomate (bread rubbed with tomato), followed by a Catalan dessert like crema catalana.