Blanco y Negro

Directions

1. 1
   In a medium saucepan, combine the milk and the heavy cream with 3/4 cup of the sugar.
2. 2
   Add the lemon zest and broken cinnamon stick and bring to a simmer.
3. 3
   Cover and let the milk mixture stand off the heat for 30 minutes.
4. 4
   Strain the milk mixture into a bowl.
5. 5
   Set the bowl in an ice water bath and stir occasionally until chilled.
6. 6
   Pour the milk mixture into a 9-by-13-inch glass dish.
7. 7
   In a large bowl, using an electric mixer, beat the egg whites with the remaining 2 tablespoons of sugar and the lemon juice at high speed until soft peaks form.
8. 8
   Dollop the beaten whites all over the milk mixture and freeze until solid, about 5 hours.
9. 9
   Cut the ice milk into 2-inch squares.
10. 10
    Using a sturdy spatula, transfer half of the squares to a food processor.
11. 11
    Process until completely smooth, scraping down the sides of the bowl.
12. 12
    Scrape the smooth ice milk into a bowl and freeze.
13. 13
    Repeat with the remaining squares of ice milk.
14. 14
    Freeze the ice milk until it is firm but not solid, about 30 minutes.
15. 15
    Scoop the ice milk into 6 tall glasses and top with the chilled espresso.
16. 16
    Dollop the drinks with whipped cream and sprinkle with cinnamon.
17. 17
    Serve the drinks with straws and long spoons.