Fork

Take your non-dominant hand with your palm facing up to form the plate. Then make a fork with the index and middle fingers on your dominant hand and place it on the plate, touching the plate a couple times with your fingers acting as the tines of the fork. It should look like you are spearing some food on your fork, with the optional, additional sign of bringing the fork to your mouth.

For an ASL alternative, some adults sign fork with three fingers - the index, the middle, and the ring fingers - touching the plate, but for babies and toddlers, two tines are enough.