Since my grandma is no longer here, I was not able to ask her what she did as I wanted my canned bing cherries to taste just like hers. I decided on raw packing it, which means I put the cherries in the jar and poured the syrup on and canned them in a water bath.
I went with this method since cooking the fruit prior would probably just turn it to mush (like with the plums). So I made a light syrup and packed the cherries into pint jars. I made 12 pint jars and it took 2 batches and made the kitchen steamier than normal all morning.
The jars have sat for over a week now so my goal is to open one of them at our BBQ tonight to try the sweet deliciousness! I'll post next week on how that went.