Sauté the Aromatics: Heat the avocado oil in a saucepan over medium heat. Add the garlic, sliced leeks, and 1/4 teaspoon pink sea salt. Sauté until the vegetables are tender. Cook the Cauliflower: Add the roughly chopped cauliflower to the saucepan and sauté for a couple of minutes, allowing it to cook briefly with the aromatics.
Add the Broth: Pour in the 7 cups of bone broth and increase the heat to high. Bring the mixture just to a boil. Simmer the Soup: Cover the saucepan, reduce the heat to medium, and simmer for 20–30 minutes, or until the cauliflower is completely soft.
Add the Sunflower Seeds: Turn off the heat and let the soup cool slightly. Stir in the sprouted sunflower seeds.
Blend Until Smooth: Carefully transfer the soup to a blender in batches. Blend each batch on high until the soup is smooth and creamy.
Warm the Blended Soup: Return the blended soup to the saucepan and warm it over low heat.
Adjust the Seasoning: Stir in the remaining pink sea salt to taste, or add the gluten-free tamari if you want additional saltiness.
Garnish and Serve: Ladle the warm soup into bowls and garnish with cilantro, chives, sunflower seeds, or avocado before serving.