Fresh avocado, puréed to look like green cool whip. Put inside a plastic bag and cut a hole in the corner. Squeeze avocado on to a cookie sheet with parchment paper or a non stick sheet. Freeze for about a half hour or so and then put the little morsels into a plastic bag. Then for smaller babies put inside a mesh bag for them to chew or for older children they can chew them until they are thawed. My daughter loves them! I have mixed the avocado with banana and peach as well :)