You could use leftover sweet potatoes to reduce the preparation time.

If you've cooked a ham on the bone, use this ham in the soup because it's much more flavorful. Otherwise you can use breakfast ham. 

1. In a large saucepan, brown the country ham in oil over medium heat.
2. Add the onion and brown.
3. Add the coffee and stir for a few minutes while simmering.
4. Add the water and bring to a simmer.
5. Cover and simmer for 10 minutes.
6. Add the sweet potatoes and peppercorns and return to a simmer.
7. Cover again and simmer another 10 minutes.
8. Put in a blender with the sour cream or cream fraiche and blend until smooth. Serve hot.