To make these wonderful sweets, start by separating the yolks from the egg whites, remembering that the eggs must be at room temperature.
Then put the yolks aside, you can use them in other recipes, and beat the egg whites until stiff. Testing with a teaspoon, it should not fall. Then add a teaspoon of lemon juice and mix it into the mixture.
Add the sugar a little at a time, always stirring with the whisk of the mixer.
Chop the hazelnuts and add them to the mixture together with the chocolate chips. Mix from the bottom up with a spatula so as not to disassemble the eggs.
If you like the meringues more colourful, making them even more attractive to the eye, colour them with food colouring gel or powder. Personally, I divided the dough in two and coloured half of them pink.
Turn on the oven at 100°C (212°F) static and spread baking paper on 2 baking trays. Pour the mixture into a piping bag and form your meringues, remembering to leave about 2 cm between each one.
If you like contrasting flavours, sprinkle the meringues with some salt flakes.
Now bake at 100°C for 1 hour, then at 90°C for half an hour.
Once this time has elapsed, check that the meringues are cooked properly, remove the pans from the oven and leave them to cool for 10 minutes. Then remove them. Finally, serve and enjoy all their crunchiness. Enjoy your meal!