3/4 cup water
1/2 cup sugar
2 cups espresso
2 cups strong coffee
In a small saucepan, bring water and sugar to a boil over low heat. Let mixture boil 5 to 6 minutes, or until slightly thickened. Remove pan from heat; cool.
Add coffee to sugar mixture and pour into shallow dish. Freeze about 4 hours, stirring mixture every 40 minutes, until almost firm. Serve with whipped cream and lemon rind.