If I don't have a traditional Italian recipe tucked into my memory bank somewhere, my resource of choice is La Cucina Italiana, either the print versions on my bookshelf or online. For this, I started with this La Cucina Italiana recipe. It worked well. I did use pistachios instead of almonds and lemon for orange.
Cornstarch for dusting
3 C whole, roasted and unsalted pistachios
3 large egg whites, at room temperature
1/4 teaspoon pink Himalaya salt
3 C organic granulated sugar
1 C clover honey
Finely grated zest of 1 lemon
Put egg whites and salt into the bowl of an electric mixer fitted with whisk; set aside.