Elderberries?

I'm not sure of the appeal of these little things. They're cute and all but they have very little flavor. They're tiny and have seeds in them and I decided to try to remove the seeds and concentrate the flavor to see if I could increase their appeal. As they boil down the smell is yeasty rather than berry-like and I'm not sure what to make of that. I suspect that I'll be using blueberries in place of the elderberries for the pavlova I'm making.