Bring water and sugar to a boil in a small saucepan; simmer until a candy thermometer reads 250 degrees F (120 degrees C), about 5 minutes.
Remove saucepan from heat; add coffee and vanilla. Pour into a metal bowl and mix well. Cool granita mixture to room temperature, about 10 minutes. Freeze for 1 hour.
Stir the granita vigorously to break up ice crystals. Repeat freezing and breaking up process 4 to 5 more times, 2 to 2 1/2 hours total.
Drop spoonfuls of whipped cream into 4 short glasses. Divide granita mixture evenly among the glasses. Top with remaining whipped cream.
Nutritional Facts
Per 4 servings
Calories: 107
Carbohydrate: 19g
Fat: 3g
Protein: 1g
Sugar: 18g
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