Put the carrots into a steamer set over boiling water and cook for 15 to 20 minutes until tender.
Alternatively put the carrots in a saucepan and pour over just enough boiling water to and cover with a lid, simmer for 15 to 20 minutes until soft.
Drain the carrots and place in a blender, adding some of the water from the bottom of the steamer or some of the cooking liquid, then puree until very smooth.
The amount of liquid you add really depends on your baby, you may need to add a little more if he finds the puree difficult to swallow.
Spoon some of the puree into your baby’s bowl and serve lukewarm. You can freeze the remainder in an ice cube tray or small plastic containers.