Spring is in the air and berries are starting to make their way back onto grocery store shelves. Even though it's a bit early to make jams and jellies, or even cobblers or shortcake, I was chomping at the bit to incorporate some into a new recipe. These lemon donuts with fresh blackberry glaze were the perfect combination of flavors for a spring breakfast treat. Don't let the bright purple color fool you, there's no artificial dyes here. Just plump, juicy blackberries.  Oh, and trust me... you'll want to use the reduction technique with every berry-flavored frosting or glaze from now on!