Get all ingredients measured and ready first.
Separate your egg whites into a bowl.
Make sure no yolk gets mixed in.
Let them sit at room temperature.
This helps them whip up better.
Add sugar, corn syrup, and water together.
Put them in your saucepan over medium heat.
Stir until the sugar dissolves completely.
Stop stirring once it starts boiling.
Let it heat to 240°F on thermometer.
This takes about 5 to 7 minutes.
While syrup heats, start beating egg whites.
Add cream of tartar and salt too.
Use your mixer on medium speed first.
Then increase to high speed gradually.
Beat until soft peaks form nicely.
This takes around 3 to 4 minutes.
When syrup reaches 240°F, remove from heat.
Pour it slowly into whipped egg whites.
Keep your mixer running on medium speed.
Pour in a thin, steady stream.
Be careful not to hit the beaters.
Beat for 7 to 10 minutes total.
The mixture will become thick and glossy.
Turn off the mixer when done beating.
Add your vanilla extract to the fluff.
Fold it in gently with spatula.
The fluff should be white and shiny.
It should hold its shape perfectly now.