01 - In a large pot over medium heat, cook chopped turkey bacon until crisp. Remove with slotted spoon and set aside on paper towels.
02 - Melt butter in the same pot. Add leeks, onion, and garlic. Cook, stirring occasionally, until softened, about 5 minutes.
03 - Add diced potatoes and cook for another 3 minutes, stirring gently.
04 - Pour in chicken broth and water. Bring to a boil, then reduce heat and simmer until potatoes are tender, about 15 minutes.
05 - Using an immersion blender or carefully transferring to a blender in batches, blend soup until smooth and creamy.
06 - Stir in heavy cream, salt, pepper, and nutmeg. Heat gently for 3-4 minutes without boiling.
07 - Ladle soup into bowls. Top with crispy turkey bacon and fresh chives.