1. Remove peel of tomato. Chop tomato and carrot into small pieces.
2. Heat a very little oil in the pan. Put tomato pieces in. Stir fry a bit.
3. Add in enough water. Put carrot and shiitake in.
4. Simmer till carrot softens. Because I cooked other dishes at the same time, so I let the soup simmer for about 30 mins.
5. Finally, add in spinach. Add some salt and a little sugar.