Combine and stir all the ingredients, except the vanilla or orange rind, together in the top of a double boiler. Cook without stirring over - not in - rapidly boiling water for 7 minutes. Stir and cook 5 minutes more.
Remove from heat. The tapioca thickens as it cools. Gradually fold in either the vanilla or grated orange rind. Pour into a serving bowl. Chill before serving.
Serving
Suggestions:
Serve with cream, fresh berries, crushed or canned fruit, if desired.
