In a pot to medium heat, pour some olive oil, and put the pumpkin, carrot, potatos, onion and garlic pieces. Cook for about 5 minutes until the vegetables turn somewhat golden.
Now pour water and let it all cook. To make sure the vegetables are cook use a knife or fork, they should be soft in the inside.
Pour everything into a blender and blend until it is all well mixed.
Pour the cream back into the pot and cook until boiling, stiring non stop. While cooking, add salt, black pepper, and ground nutmeg. Once it boils, serve while still hot.