01 -
Set your oven to 225°F (110°C) and put parchment paper on a baking tray.
02 -
Take a spotless bowl and beat those egg whites until they're bubbly. Toss in that tiny bit of salt and keep beating until you see soft peaks starting to show.
03 -
While still beating, slowly add your sugar bit by bit. Keep going until you get stiff peaks and the mix looks shiny.
04 -
Use a gentle touch to fold the cornstarch and vinegar into your mix. Make sure they're completely mixed in.
05 -
Slowly fold in your lemon peel and juice. Try not to knock all the air out of your fluffy mix.
06 -
Get your piping bag with the star tip, fill it up, and make small mounds on your lined tray. Leave a couple inches between each one.
07 -
Stick the tray in your hot oven and let them bake for about an hour. They should feel dry when you touch them and lift off the paper easily.
08 -
Turn the oven off but leave your cookies inside to cool down slowly for at least half an hour.
09 -
If you want, dust a bit of powdered sugar on top to make them prettier and sweeter.