How many of my readers just looked at that combination and cringed?
Grenadine contains citrus, Bailey's contains cream. Have you ever mixed the two?
Well, it didn't go well.
Here's the thing: I don't think Grenadine is the best way to add cherry flavor to a drink, but my other idea at the time wouldn't work, either: cherry 7Up. It wasn't until I got home and realized that Kirshwasser is the way to add cherry flavor without curdling things. Also known as Cherry Brandy.
Now, the drink is kind of potent, and adding more alcohol is going to make it more potent. I just have to figure out exactly which non-alcoholic mixer to add...