Part of the Valentine's Day Workshop Go Back to the Workshop Sign Up for the Workshop Delicate poached apple slices, rolled into blooms, make a showy arrangement atop a cloud of buttermilk cream, all tucked into flaky puff pastry. You can bake the pastry and poach the apple slices a day ahead; refrigerate apples, immersed in poaching liquid. The filling needs thirty minutes to set; spread it on the cooled baked puff pastry, and shape the roses while you wait. This is a good occasion to pass up supermarket puff pastry in favor of an excellent-quality brand that is made with all butter -- and so has a superior flavor. We used Dufour, which is sold in single fourteen-ounce sheets. If you use a brand sold in sheets of two, overlap one-and-a-half sheets to create a rectangle. Brush the overlap with water, then proceed with step one.