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1
Line an 8-inch-square baking pan with 1 sheet of the edible rice paper, extending the paper up the sides of the pan; set aside.
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2
In a 3-quart heavy-bottomed saucepan over medium heat, cook the corn syrup, honey, sugar, and the water until the sugar is dissolved (about 5 minutes), stirring constantly with a long-handled wooden spoon or heatproof spatula.
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3
Brush down the sides of the pan with a pastry brush dipped in warm water to prevent the sugar from crystallizing.
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4
Increase the heat to medium-high, place a sugar thermometer in the pan, and cook the mixture without stirring until it registers 290F on the thermometer (about 15 minutes).
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5
Brush down the sides of the pan with a pastry brush dipped in water two more times during the cooking process.
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6
While the sugar syrup is cooking, in the bowl of a stand mixer fitted with the whisk attachment, beat the egg whites on medium speed until they are frothy.
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7
Add the cream of tartar, increase the speed to medium-high, and beat the egg whites until they hold firm peaks (3 to 5 minutes).
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8
Remove the pan with the sugar syrup from the heat, remove the thermometer from the pan, and place the thermometer in warm water to cool.
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9
With the mixer speed at medium, slowly pour the sugar syrup into the egg whites, being careful not to drip the syrup down the sides of the bowl.
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10
Increase the mixer speed to high and beat until the mixture is stiff (about 5 minutes).
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11
Blend in the vanilla and all the nuts.
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12
Turn the mixture into the paper-lined pan, spreading it out smoothly and evenly into the corners of the pan.
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13
Place another sheet of rice paper on top of the candy.
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14
Place a cutting board or plate on top of the rice paper and weight it with a heavy item, such as a heavy pan.
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15
Let the torrone set for 12 hours at room temperature.
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16
With a sharp, thin-bladed knife, release the edges of the candy from the pan.
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17
Invert the candy onto a cutting board, then reinvert so the top side is facing up.
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18
With a serrated knife, cut the candy into 1-inch squares.
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19
Between sheets of waxed paper in a tightly covered container, the candy will keep for 1 week at room temperature or 3 weeks in the refrigerator.
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20
The torrone is best served at room temperature.
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21
Substitute walnuts or cashews for the almonds and hazelnuts.