How to Make Aquafaba Meringues:
To make the aquafaba meringues you simply need a 15 oz can of chickpeas. Drain the liquid into your mixing bowl and put the chickpeas in the fridge for another use. Add at least 1/4 tsp and up to 1/2 tsp of cream of tartar. Then add powdered sugar to your liking. Start with 1/2 cup to 1 cup of powdered sugar. You can always add more later if you find it’s not sweet enough for you. Add 1 tsp of vanilla alone or with 1/4 cup of unsweetened cocoa powder if you want vanilla or chocolate flavor.
After you’ve put everything into your mixer, use the wire whisk handle to whip the aquafaba until it looks like the picture above. It usually doesn’t take very long. (When the peaks are still soft, check the sweetness to see if you need to add any more before whipping to stiff peaks.)
After it’s whipped to stiff peaks, put some into a gallon zip lock bag and snip off the end. Preheat your oven to 250 degrees and line a cookie sheet with parchment paper. Using the ziplock bag, pipe meringues onto the parchment paper. I usually make them about tablespoon size. I also like to make the meringues pretty by sprinkling a mixture of unsweetened cocoa powder and powder sugar on top of each meringue before putting them into the oven.
Once you’ve filled the cookie sheet with your meringues, pop them into the oven and bake them for at least an hour. Then check them. When they are done, they’ll be hard and dry. If they’re not quite done, cook them longer for 15 minutes at a time until they are. (If you make them tablespoon size, they’ll be done after an hour. If you made them larger, they may take more time.)
Once they’re done, turn off the oven and let them cool in the oven for half an hour. Then take them out and let them cool completely on a wire cooling rack. When you go to take them off the parchment paper after they’ve cooled, carefully lift them off and place them into a tupperware, using parchment paper or plastic wrap to layer them. They’ll keep for a good while in the tupperware.