In a large saucepan, heat the coconut oil and add the onions, carrots, ginger and garlic all at the same time. Gently fry for at least 5 minutes, until the vegetables have softened and the aromas have been released, taking care not to allow them to burn or change colour.
Add the water so it just covers the vegetables plus a generous sprinkle of salt to taste and bring to a boil.
Reduce the heat and cover. Let it simmer for around 10mins until the carrots are tender.
When cool, blend with a hand blender or a food processor. If the soup is too thick, add a little boiled water until desired consistency. Taste and adjust seasoning if necessary.
Sprinkle with a garnish of sesame seeds and serve hot