Query: Where does the Portuguese art of pastry have its origins?
Context: Typical fast food dishes include the Francesinha (Frenchie) from Porto, and bifanas (grilled pork) or prego (grilled beef) sandwiches, which are well known around the country. The Portuguese art of pastry has its origins in the many medieval Catholic monasteries spread widely across the country. These monasteries, using very few ingredients (mostly almonds, flour, eggs and some liquor), managed to create a spectacular wide range of different pastries, of which pastéis de Belém (or pastéis de nata) originally from Lisbon, and ovos moles from Aveiro are examples.