Boil a small pot of water on the stove.
Wipe down the bowl of your stand mixer with a paper towel coated in distilled white vinegar.
In the bowl, add 3 egg whites and ¾ cup granulated sugar.
Pour the boiling water into a small bowl and place the stand mixer with the egg whites and granulated sugar on top of it. Whisk the egg whites and sugar together over the residual heat until the sugar dissolves.
Lock the bowl into the stand mixer and mix for about 1 minute. Add ¼ tsp cream of tartar and 1 tsp lime juice and then continue mixing on high speed until you reach stiff peaks.
Preheat the oven to 200 degrees Fahrenheit. Line a cookie sheet with parchment paper
Put the egg white mixture into a piping bag with a piping tip. Pipe small amounts of meringue onto the parchment paper to form the suspiros.
Place the cookie sheet in the oven and bake for about 60 minutes.
When the 60 minutes is up, turn off the oven but allow the suspriros to remain in the oven until they are completely cold.
Serve and enjoy!