One of my favorite summer fruit combinations is finally back in season. Fragrant, juicy nectarine and cool, sweet blueberries are quite the pair. The only question now is pie or cake? Ice cream or shortbread? Crisp or crostata? For two summers I made crostata every day for a restaurant on the Vineyard. I haven't made another one since I left. For some unknown reason this summer I'm feeling the pull. Crostata may be coming back into season too.