Experiment with various amounts of mint, lemon rind, and ginger to discover the combination that suits your palate best.
In a pan, combine blueberries, sugar, and water. Boil for 10 minutes or until berries are soft. Butter bread generously. Put 2 slices of bread in the bottom of a dessert bowl. Sprinkle with chopped mint, grated lemon rind, and powdered ginger. Pour one third of the blueberry mixture over the bread. Repeat twice, omitting the mint, lemon rind, and ginger on the last layer. Run a knife through the pudding several times to help the bread absorb the blueberry juice. Chill for several hours or overnight. Serve plain, with vanilla ice cream, or with whipped cream.