How to Make It
Peel half the mango and cut 1/2-inch-thick lengthwise slices down to the pit. Cut crosswise to release the slices. Repeat the process with the other half, then cut the mango slices into 1/2-inch dice.
In a small nonreactive saucepan, combine the mango, blueberries, sugar, lemon juice, candied ginger, and lemon zest with 1/4 cup of water. Bring to a boil over high heat. Lower the heat and simmer until the fruit is softened and the liquid thickened, about 15 minutes. Let cool slightly.