Add 4 egg yolks in a stand mixer. Mix at low speed first and when you will see the yolks transforming from gluey yellow into creamy white, increase the speed and let it work up until you will obtain pale white peaks, firm and smooth. It will take around 10 min.

Add a pinch of salt and a tsp of lemon juice. Mix at medium speed for 1 min.

Slowly add the powdered sugar, one tablespoon at the time.

Add any food coloring you like. Mix up until the color is evenly incorporated.

Transfer the mix into a piping bag (I use freezer plastic bags). Pipe any form of meringue you like on a baking sheet lined with parchment paper.

Bake the meringue in preheated oven to 200F for 2 hrs. Turn the oven off, leaver it slightly open and leave the meringue inside for at least another hour so that they will dry completely.