Melt the ghee in a medium saucepan over medium heat.
Add the onion, celery, and carrot, sautéing until the vegetables are tender and translucent.
Stir in the tomato paste and cook for one minute until fragrant and slightly darkened.
Add the lobster meat and cook for two minutes until it begins to firm up.
Pour in the dry sherry, scraping the bottom of the pan to release any browned bits.
Add the seafood broth, sea salt, and black pepper, then simmer gently for 10 minutes.
Transfer half of the lobster meat to a small bowl and set aside.
Use an immersion blender to purée the soup until completely smooth and velvety.
Stir in the heavy cream and return the reserved lobster meat chunks to the pot.
Ladle into a warm bowl and garnish with fresh chives before serving.