First, the hazelnuts are roasted in the pot, sugar is poured on the roasted hazelnuts and mixing is started. First it becomes solid, but the sugar is caramelized as it goes on. When it is caramelized, let's add the lemon and mix it. You can put it on the greaseproof paper when it ripen You can give any shape you want. Consume when cooled.
If caramelized water is left, scratches will come off when cooled on oily paper and you will have ready decorations on the cakes :). You can use the croquant both on the cake and on it.