In a saucepan over medium heat, bring orange juice
to a boil. Remove from heat, add gelatin, sugar
and lemon peel. Stir until gelatin is dissolved.
Chill until mixture is the consistency of
unbeaten egg whites. Stir in buttermilk.
Mix well. Fold in blueberries.
Pour into a 6-cup mold. Refrigerate until set.
Make 8 servings.