This mini jar of fruit jam is packed with guavas from Calvillo, the Mexican city known as the world capital of guava. This little jar of artisan preserves is perfect for everyone unfamiliar with the gourmet taste of Mexico’s mouthwatering specialty fruit. If you’re not already a dedicated fan, the rich, luscious and naturally sweet flavor of guava jam might make this spread your new favorite topping for breakfast foods, breads and pastries.