Cranberry Cumberland Sauce

This is an old favorite. I've made it for more Thanksgiving celebrations than I can count and everyone loves it.

2 pounds thick, whole-berry cranberry sauce
1/2 Tablespoon dry mustard (more if desired)
Juice and grated rind of 1 or 2 oranges
1 to 2 Tablespoons cornstarch
1 teaspoon lemon juice
2 to 3 Tablespoons sugar
grated cinnamon or cloves (optional)
grated lemon peel (optional)

Dissolve the mustard in the orange juice, together with about a teaspoon of cornstarch. Add to the cranberry sauce, along with the lemon juice, grated orange rind, and 2 Tablespoons of sugar. Heat the sauce, stirring constantly, for about 10 minutes. If you wish, add a little ground cinnamon or cloves or some grated lemon rind. Taste the sauce for seasoning, adding more sugar if needed. If the sauce is too thin dissolve another teaspoon of cornstarch in a little juice or water and stir it in. Chill well before serving.

From Anna Thomas' The Vegetarian Epicure, 1972.