Preheat the oven to 350˚F. Position the rack to the center of the oven. Line cupcake pans with paper liners.

In a medium bowl, sift together the flour, baking powder and salt; set aside. In another medium bowl, whisk together the milk and egg whites until well blended.

Place the sugar and lemon zest in a large mixer bowl and rub together with your fingers until the zest has moistened all the sugar. Use the paddle attachment to beat the butter in at medium speed for 3 minutes, until very light. Add in the extracts and then one third of the flour mixture, while continuing to beat on medium speed. Mix in half of the milk-egg mixture, then half of the remaining dry ingredients. Beat in the rest of the milk and eggs until fully incorporated, then mix in the remaining of the dry ingredients. Beat at medium speed for a full 2 minutes to aerate. Evenly distribute the batter into the cupcake pans.

Bake for 18-22 minutes (for regular cupcakes) or 10-12 minutes (for miniature cupcakes). The cupcakes are done when they pass the toothpick test and are springy to the touch. Cool completely on a wire rack.

Puree the raspberries in a blender and then push through a fine mesh strainer to discard the seeds; set aside. Cream together the butter and shortening in a large mixing bowl, with the paddle attachment. Beat in the vanilla and most of the raspberry puree, until fully combined.