Mix Fruits and Nuts: Add the cubed candied citron, candied orange peel, and whole almonds to a mixing bowl with the melted sugar and honey. Stir well to combine.
1 ¾ cups whole almonds, ⅔ cup candied citron, ⅔ cup candied orange peel, 1 ½ cups sugar, ⅔ cup honey
Add Flour and Spices: Gradually stir in the all-purpose flour to the fruit and nut mixture, followed by sprinkling in nutmeg, ground cloves, ground coriander, and cinnamon until everything is well mixed. Expect a thick, sticky dough.
1 ⅓ cups all-purpose flour, A pinch of nutmeg, A pinch of ground cloves, A pinch of ground coriander, ¾ teaspoon ground cinnamon
Prepare the Pan: Grease an 8-inch springform pan and line the bottom with edible rice paper. Use a strip of parchment paper to line the sides of the pan as well.
1 sheet of edible rice paper
Shape the Cake: Transfer the dough to the prepared pan. With the back of a wet spoon, smooth and evenly press the dough into the pan.
Dust with Sugar: Sift powdered sugar generously over the top of the cake before baking.
Powdered sugar for dusting
Bake: Place in a preheated oven at 425°F and bake for about 10 minutes. The cake should be set but not hard, with a lightly golden top.
Cool and Serve: Allow the cake to cool for a few minutes in the pan before removing. Dust with additional powdered sugar and serve your delicious slice of Siena.