When people go to Fábrica de Pastéis de Belém to get a pastel de nata, how do people usually eat it? And what is the recipe.

Context: Since the opening of Fábrica de Pastéis de Belém, the original recipe of the pastel de nata is kept in a secret room. The Fábrica de Pastéis de Belém is the most popular place to buy pastéis de nata; the shop is located just a short three-minute walk from the Jerónimos Monastery. The shop offers both takeout and sit-in services and sells over 20,000 pastéis de nata a day. Usually the tart is sprinkled with canela, and often accompanied with a bica.

Answer: Typically people have their pastel de nata with cinnamon and a strong espresso coffee.
The original recipe is well kept secret since the Fábrica de Pastéis de Belém opened. It is stored on a secret room.