Signing: Favorite is signed by tapping your middle finger on your chin. You take an open palm, indent your middle finger slightly and tap it on your chin.
The same sign is used for taste (sometimes with the finger tapped a little higher on the lips instead of on the chin).
Usage: Favorite is a useful concept with older babies, because it introduces the concept of choice and making decisions. For snack, you can give baby a couple of different options and ask, “Which one is your favorite?”
Flash Card: Click the link to view the Taste / Favorite Baby Sign Language Flash Card. The flash cards are printable and available in both U.S. Letter and A4 sizes.