Sift together the almond flour and powdered sugar and set them aside.
1 cup (100g) almond flour, 7/8 cup (105g) powdered sugar
Heat up a small pot of water on the stove to create a double boiler for the Swiss meringue. Whisk the egg whites and granulated sugar in the bowl of a stand mixer over the double boiler until the sugar is fully dissolved and the egg whites are frothy (about 120F or 49C).
3 large (100g) egg whites, 1/2 cup (100g) granulated sugar
Remove the mixture from the heat and use the whisk attachment, on high speed, to beat the egg whites and sugar just until stiff peaks form, about 2 minutes. Add in the raspberry extract, red, pink, and black food coloring and mix for a few seconds, until they are fully incorporated.
1 tsp raspberry extract, 3 drops of red Gel food coloring, 3 drops of pink Gel food coloring, 1-2 drops of black Gel food coloring
Use a firm spatula to fold the dry ingredients into the meringue. This may take a while, just keep folding and pressing the batter against the wall of the bowl until the mixture is able to ribbon off and form a complete figure '8' without breaking. Don't over-mix.
Using a pastry bag, with a small circle tip, pipe out 1 1/2 inch size circles onto a baking sheet, lined with parchment paper, about 2 inches apart. Rap tray on the counter a few times to remove any air bubbles from within the batter (use a toothpick to remove any air bubbles that are visible and won’t come out).
Allow the cookies to rest while preheating the oven to 300F (149C) conventional (no fan). Bake one pan at a time in the center of the oven for 13 minutes. Remove the pan from the oven and allow the cookies to cool completely on the pan.