A delicious twist on a traditional meringue that adds the perfect flavor to this light and airy cookie. Easy to make and fun to eat, they're dairy-free and gluten-free, a great allergen-friendly dessert.
In a very clean glass or metal bowl with a very clean whisk attachment, add your egg whites and cream of tartar. Mix slowly then increase the speed to beat until soft peaks form.
3 egg whites, 1/4 teaspoon cream of tartar
Once you have soft peaks, scrape down your bowl and turn the mixer back on. Slowly add the sugar while beating your eggs. Once all the sugar has been added, turn off your mixer and scrape down the sides again. Add the cocoa powder and espresso. Mix again on low until the cocoa powder is incorporated, then turn up the speed and whip until you have stiff peaks.
Add your meringue to a piping bag or gallon size baggie. Snip off a corner or use a wide star tip, then pipe onto a cookie sheet covered in a sil pat or parchment paper. Pipe them close together, as they won't spread or rise.
Place in your 300 degree oven and turn off the heat. Let them hang out in the oven for two hours or overnight before removing. Pull from the cookie sheet carefully to avoid breaking them, then store in a tightly sealed container for up to a week.