Using homemade wild plum syrup as a cake soak?

I have a half pint of homemade wild plum syrup (basically wild plum jam I didn't cook down long enough, it didn't set) and I want to use it to make a treat for work. I was thinking some kind of soaked cake but I've never done it and I don't know what consistency I need the syrup to be.

Do y'all have thoughts or suggestions? I was thinking a simple vanilla pound cake with a frosting drizzle.