Macarons Gluten Free: Mastering the French Meringue Shells

Instructions:

1. Stage 1: Preparation of Dry Ingredients. Sift the almond flour and icing sugar (the tant pour tant) together into a large bowl. Repeat the sifting process a second time to ensure absolute fineness. Discard any large lumps that remain. Set the sifted dry mix aside.
2. Stage 2: The French Meringue. Place the room-temperature egg whites in the bowl of a stand mixer. Whisk on medium speed until foamy.
3. Slowly sprinkle in the granulated sugar, one tablespoon at a time, while the mixer runs on medium-high speed.
4. Continue whipping until the meringue is glossy, holds stiff peaks, and does not fall when the whisk is lifted (the 'oiseau’s beak' stage). Add food colouring/extract during the last minute of whipping, if using.
5. Stage 3: Macaronage (The Fold). Add the sifted tant pour tant into the meringue bowl all at once.
6. Using a rubber spatula, gently fold the batter. Cut down the center, then scrape the bowl edge and pull towards the center. Rotate the bowl and repeat this macaronage technique.
7. Test for Consistency: Continue folding and scraping until the batter is smooth, glossy, and falls off the spatula in a thick ribbon. It should be able to form a 'figure eight' without breaking. Stop immediately when this consistency is reached.
8. Stage 4: Piping and Resting. Transfer the batter into a piping bag fitted with a round tip. Pipe 1.5-inch circles onto the silicone mats, holding the bag vertically and lifting cleanly after each pipe.
9. Firmly tap the baking sheets three to five times on the counter to release trapped air bubbles. Pop any remaining surface bubbles with a toothpick.
10. Cure (Crust Formation): Leave the trays to rest at room temperature. They are ready when you can lightly touch the surface without the batter sticking to your finger (1 to 2 hours).
11. Stage 5: Baking. Preheat the oven precisely to 300°F (150°C).
12. Bake one tray at a time for 15–18 minutes. They are done when they do not wobble on the feet when gently touched.
13. Cool: Slide the mat off the hot tray and allow the shells to cool completely before attempting to remove them.
14. Stage 6: Filling and Maturation. Prepare Filling: Cream the softened butter, then gradually beat in the sifted icing sugar and vanilla until light and fluffy. Add cream/milk as needed for texture.
15. Assemble: Match up same-sized shells. Pipe a dollop of buttercream onto one shell and gently sandwich it with the matching shell.
16. Maturation: Store the finished macarons in an airtight container in the refrigerator for at least 24 hours to develop the characteristic chew. Serve at room temperature.