01 - Heat olive oil or butter in a large pot over medium heat. Add the chopped onion and sauté for 3–4 minutes until softened and translucent.
02 - Stir in the garlic, sliced carrots, and diced potato if using. Cook for 5 minutes, stirring occasionally, until lightly coated and fragrant.
03 - Add the ground cumin and ground ginger, stirring continuously for 1 minute until the spices are fragrant and well distributed.
04 - Pour in the vegetable broth and water. Bring to a boil, then reduce heat to low, cover, and simmer for 20–25 minutes until the carrots and potato are fork-tender.
05 - Remove the pot from heat. Use an immersion blender to purée the soup directly in the pot until silky smooth, or carefully transfer to a stand blender in batches.
06 - Stir in the heavy cream or coconut cream. Return to low heat briefly to warm through if needed. Season with salt and freshly ground black pepper to taste.
07 - Ladle the soup into bowls and garnish with fresh parsley or chives. Serve hot alongside crusty bread or a simple salad.