It's mid-summer and I realized that I needed more lemony recipes. Lemons, berries, and buttermilk just scream "summer". OK, maybe not so much the buttermilk, but all three of them are perfect in a summer coffee cake. In spite of the fancy lemon curd, this is not a delicate cake. The words "old-fashioned", "country" and "picnic cake" come to mind when describing this cake. Ain't nothing wrong with that.