Put the chopped carrots in a saucepan with the water.
Cover with a lid and bring to the boil.
Simmer for 15-20 minutes or until the carrots are tender.
Drain off the water - but don’t through it away! Blend the carrots with a hand blender or food processor until smooth. You may need to add some of the cooking water to get a smoother, thinner pureé.