Sopa de Camote

My grandmother recently sent me a handwritten notebook containing some of the recipes she used to cook when I was a boy. One of the recipes was for sweet potato soup. I can’t actually say that I remember eating such soup, but I do remember that sweet potato was commonly eaten in the form of a sweet paste, called Dulce de Batata, with queso (a soft bland cheese) in much the same way as one would eat quince paste. I am now feeling inspired to make my own Dulce de Batata- I will get back to you on that one.
I have added cinnamon and rosemary to my grandmother’s austere formula, just because I always like to add some sparkle to my life. I honestly don’t know what my granny would think of cinnamon being included in a savory soup but I can tell you that it works extremely well.
I know sweet potatoes are not very summery, but I decided to do this recipe now because it is quick and easy and we all know how stressful December can be. And I wish to also dedicate it to my friend Vida, who is sweet, down to earth and humble just like a sweet potato. And just the same way that everyone loves potatoes, every one loves Vida too. XXX

Components
Olive oil
1 red onion, finely chopped
1 large cinnamon stick
1 rosemary branch (about 10 cm)
1 kilo sweet potatoes (I use the orange variety which is very common here in Australia), peeled and cut into cubes
Stock
Sea salt
Fresh black pepper and nutmeg
Crispy grilled pancetta
Crème fraiche
Fresh chopped parsley

Process
In a large saucepan sauté the onion and rosemary stalk in the olive oil for about 10 minutes or until softened. Discard the rosemary.
Add the sweet potato and cinnamon stick.
Add enough stock to submerge the ingredients.
Simmer for about 20 minutes or until the sweet potato is cooked through.
Remove the cinnamon stick.
Puree the soup and season with pepper and nutmeg.
Serve the soup hot, with crème fraiche, crispy pancetta pieces and chopped parsley.