When weaning, puree a range of different fruit and vegetables,then freeze them in icecube trays. Once frozen transfer them in to a freezable container and keep them in the freezer. Remember to date the container so you know how long they have been in there! Take them out a little while before using them to allow to defrost, then pop them in to a bowl and heat by putting the bowl in to hot water, although it doesnt take very long to defrost if you do forget and you have a screaming baby just pop in to the microwave for a few seconds that way it will defrost and heat at the same time. Remember to check the temp of the food!! I found this so much easier and cheaper than buying baby food in a jarm and it's healthier too!