Ascorbic Acid Ice Milk

(for when you feel a cold coming on)

8 ounces pitted dates
1/2 cup boiling water
1 cup cold water
1 cup milk or yogurt
1 teaspoon grated lemon peel
4 teaspoons lemon juice
1 to 2 teaspoon powdered vitamin C

Blend dates and boiling water in a blender until the dates are pureed. Stir in other ingredients and freeze until almost firm. Beat the mixture until smooth, then pour it into a 9-inch square pan. Cover the pan with plastic wrap and freeze the ice milk until firm.