1/4 cup granulated sugar
1 cup flour
1/4 teaspoon salt
1/8 teaspoon baking powder
8 tablespoons unsalted butter, cut into tablespoon pieces, very cold
1 egg mixed with 1 teaspoon water
Red currant jelly
1 pint strawberries, rinsed, hulled, dried and thinly sliced
Whole small strawberries, raspberries, blueberries, sliced bananas or kiwis
Whipped cream, lemon curd or confectioner's sugar (or all 3)