Blend flour, sugar, and salt. Add butter and cut in until mixture resembles coarse meal. Add 2 tablespoons ice water; blend until moist clumps form, adding more water by teaspoons if mixture is still dry. Gather dough into a ball, flatten into a disk. Wrap in plastic and refrigerate for at least 1 hour.

Preheat oven to 400 degrees. Toss plums, 4 tablespoons sugar, ginger, cinnamon in a bowl. Roll dough on floured surface to 12 1/2 round. Transfer to rimmed baking sheet. Mix 1 tablespoon sugar and 1 tablespoon flour in a small bowl; sprinkle over dough leaving 2 plain border. Arrange plums in concentric circles ondough, leaving 2 plain border. Drizzle with melted butter. Fold dough border toward center. Brush border with egg glaze; sprinkle with 1 tablespoon sugar. Bake tart until plums are tender and crust is golden, about 35-45 minutes.

Stir preserves in saucepan over low heat until melted. Brush over plums. Cool tart 1 hour on baking sheet. Run long knife until tart to loosen. Transfer tart to serving plate and serve at room temperature. Makes 6 servings.