Imagine how a teeny-weeny dried seedless grape with its origin all the way back to Corinth, Greece, could be so readily available today at most grocery stores. Look for currants right next to the raisins.
Oops--forgot to pick up the buttermilk? No sweat; just add a scant tablespoon of white vinegar or lemon juice to 3/4 cup milk, and let it stand a few minutes. Or you can substitute 3/4 cup plain yogurt.