In a large pot, sauté the celery, leek and garlic in the avocado oil until soft. Season with the himalayan salt and pepper.
Add in the chicken broth, russet potatoes and 1 rosemary sprig and bring to a boil (approx. 15 minutes or until the potatoes are soft.)
Remove the rosemary sprig and turn off the heat.
Quickly add the spinach to the soup to soften.
Carefully pour the soup into your Vitamix or high powered blender. Blend until smooth.
Serve immediately and garnish with coconut milk and rosemary sprigs.