Many babies love to eat apples. Teach your baby the sign for the word apple in baby sign language with the following description and video.
Form the signed letter X with the hand in a fist and the index finger bent. Twist the index finger against the cheek.
Acredolo, Linda & Susan Goodwyn. 2009. Baby signs: How to talk with your baby before your baby can talk, 3rd edn. New York: McGraw Hill.