Fluffy, delicious Swiss Meringue
Fill a saucepan with a little more than 1 inch of water and bring to a boil and then lower to a simmer.
In a heat safe bowl of the bowl of a stand mixer, add the egg whites and sugar. Whisk to combine.
Place the bowl over the saucepan, making sure the bowl does not touch the water. Whisk for about 5-7 minutes until the mixture is hot to the touch and the sugar granules have dissolved.
Transfer the mixture to a stand mixer and whisk on high for 6-8 minutes until the fluffy and glossy. whisk in the cream of tartar.