Wash and drain the spinach. Set aside a handful of spinach as a filling and cut the rest. Peel the ginger, onions and garlic and dice everything finely.
Heat oil and butter in a pot. Fry ginger, onions and garlic in it. Sprinkle 1 tablespoon curry over it and sauté briefly. Add coconut milk and 200 ml water and bring to the boil. Season with salt, pepper and 1 tbsp. sugar.
Cover and cook over medium heat for about 10 minutes. After 5 minutes add the chopped spinach.
Puree the soup. Season to taste with salt and lime juice. Serve the soup with the remaining spinach. Baguette tastes good with it.