In the bowl containing ½ the meringue and ½ the dry ingredient mixture, add few drops of blue food coloring and fold (approximately 10 times) until dry ingredients are fully incorporated, and your batter is no longer clumpy and stiff. Do not overfold. Start checking your batter’s readiness every 2 folds or so at this point by scraping all batter down to the bottom of your bowl, and then wiggling your bowl back and forth several times. If the batter levels out with very few peaks and lines remaining, it should be ready. (See photos in Basic French Macarons post for reference)
Preheat oven to 300 ℉ (Use an oven thermometer if possible)
Using the standard macaronaged batter, pipe the mirror image of the textured waves on a circle template to use as the backs.
Once you’ve piped a full tray, firmly bang the tray on the counter a few times to pop any air bubbles and smooth out shells. Pop any remaining large bubbles with a toothpick or scribe tool.
Set aside shells to dry until they form a skin and are no longer tacky to the touch. Once you can gently run a finger over your shells, they are ready to bake. Use a fan to speed up the process, rotating the tray every few minutes to ensure even drying. This usually takes at least 20 minutes for me even with a fan. (To skip the resting/drying process, check out my blog post on oven drying macarons. Note: Oven drying works for traditional macaronaged batter, but is not usually successful for textured no macaronage shells.)
(Hint: Go pipe the textured waves while the traditional batter shells for the back are drying) Once shells are dry, and the oven has fully preheated to 300, place one tray in the center of the middle rack of the oven. Bake for 18 minutes.
Quickly open door to check the shell’s doneness by gently pressing on the side just above the feet to see if it’s firm. If it moves at all, bake for another 2 minutes.
Check shells by performing the same test, pressing on the side. If they are still unstable, bake for one more minute, and check again. Repeat until shells are firm and do not budge.
Allow shells to cool completely, and the carefully remove from silicone mat or parchment paper by gently peeling them off.