At what age did your child figure out how to use a pincer grip?

DD is 8.5 months and loves to eat small pieces of our meals, puffs, and yogurt melts. But whenever she tries to pick these things up, she just ends up with them in her fist and then cannot figure out how to transfer them to her mouth.

I know once she figures out the pincer grip, she will become better at being able to feed herself. I just don't know when to expect this to happen!

ETA: Pincer grasp/grip = picking up small objects with the thumb and forefinger.