First stir the cornstarch into warm water until it is well mixed. Set aside.
Then mix water and orange juice. When the mixture is warm add sugar. Stir constantly until mixture comes to a boil.
Turn heat down. Add cornstarch and cream of tartar. Simmer for 15 minutes. Stir frequently.
Remove from heat and add flavoring. Some like to add a hint of food coloring to match the flavor. Also you can add nuts of your choice.
Pour into a lightly oiled, shallow square pan. Chill in refrigerator.
When cooled, cut into squares. Use a knife dipped in hot water to make the cutting easier.
Roll in powered sugar
You can store the squares in a plastic containers sprinkled with powdered sugar to prevent sticking.
