Babies often want more of something but do not yet have the words to ask for more. The sign for the word more is an extremely useful sign to teach preverbal babies. I was able to understand my infant cousin, who also used baby sign language, when he asked for more food using the more sign.
Teach your baby the sign for the word more in baby sign language with the following description and video. Use your dominant hand to form the signs.
Baby sign language, baby sign, or baby signing is used by hearing parents with pre-verbal hearing children to improve communication. My baby signs are based on ASL (American Sign Language) signs. Baby signing is distinct from sign language.
Form the hands into the flattened letter O. Hold the fingertips together in front of the chest. Pull the hands apart.
Beyer, Monica. 2006. Baby talk: A guide to using basic sign language to communicate with your baby. New York: Jeremy P. Tarcher/Penguin.