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1
For the swirl:
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2
In medium saucepan, whisk together the sugar, corn syrup, water, and cocoa powder. Bring to a low boil over medium heat, whisking often. Cook 1 more minute then remove from the heat. Whisk in the peppermint extract. Let cool to room temperature then chill in the refrigerator while you make the ice cream.
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3
For the ice cream:
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4
Create an ice bath by putting ice and water into a large bowl. Set aside.
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5
In a medium saucepan, warm up 1/2 cup heavy cream. Whisk in the cocoa powder until dissolved and smooth. Bring to a boil. Remove from the heat and whisk in the chocolate. Stir until melted and smooth. Stir in the remaining 1/2 cup heavy cream. Pour the chocolate mixture into a bowl that will fit inside the ice bath. Place the bowl inside the ice bath and set aside.
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6
In the same saucepan, warm up the milk, sugar, and salt.
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7
In a small bowl, whisk up the egg yolks. Once the milk mixture is warm, slowly whisk some of the milk into the yolks then scrape the yolk mixture into the saucepan. Bring the pan to a boil, stirring often until the mixture thickens and coats the back of a spoon or spatula. Remove from the heat and the pour the mixture through a strainer into the chocolate mixture. Stir until blended.
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8
Let cool in the ice bath until room temperature then remove from the ice bath and chill in the refrigerator until cold.
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9
Assembly
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10
Freeze the ice cream according to your ice cream maker (if freezing by hand, chill in the freezer and whisk every 30-45 minutes to break up the ice crystals until the ice cream is frozen). Just a few minutes before it is completely frozen, stir in the peppermint patties. To layer in the peppermint swirl, spoon some of the sauce into the bottom of the storage container. Spoon half of the ice cream on top, then the remaining sauce, then top with the rest of the ice cream.
