1. In a saucepan, pour the milk and put the iris. On low heat, stirring constantly, bring to a complete dissolution of the iris. Add the sugar, turn off the flame, add the butter and stir.
2. Let cool the mixture to room temperature, add the egg and whisk whisk. In a separate bowl, sift the flour and baking powder. Add the flour milled nuts and mix with the mixture. Gently stir and lay the dough on greased with butter shaper. Send the form in the preheated 180 degree oven for 30 minutes.
