Separate the egg whites in a bowl one egg at a time in case the yolk breaks. If it breaks the white cannot be used for the meringues
3 egg white
Pour the egg whites in a bowl and whisk them until firm with an electric whisker
Once they become firm, gently add half of the sugar.
1 cup caster sugar
Combine the vinegar and the cornflour with the rest of the sugar and gently add to the mix.
1 teaspoon white wine vinegar, 1 teaspoon cornstarch
The mixture is ready to be piped into the desired shapes. Place the batter into a pastry bag and tight the back of the bag pushing the batter toward the pipe
Pipe the desired shape on a flat baking pan covered with parchment paper
Bake in a hot oven at 300 F - 150 C for 1 hour.
Once they are done, turn off the oven and let them cool down inside the oven with the door closed
Serve them at room temperature
Video
Notes
To make the merinues you need the egg whites to be at room temperature
To make cruchy meringue add whitewine vinegar and cornflour