Preparation Preheat oven to 350°F. Sift together flour, baking powder, and salt. Beat together butter and brown sugar in a large bowl with an electric mixer at moderate speed until pale and fluffy, about 3 minutes. Beat in yolk, vanilla, and gingers. Add flour mixture and mix at low speed until just combined. Drop heaping teaspoons of dough about 3 inches apart onto ungreased baking sheets and bake in batches in middle of oven until golden, 13 to 15 minutes. Cool cookies on sheets on racks 5 minutes, then transfer with a metal spatula to racks to cool completely. Cooks' note:· Cookies keep in an airtight container at room temperature 3 weeks.
Preparation Preheat oven to 350°F. Sift together flour, baking powder, and salt. Beat together butter and brown sugar in a large bowl with an electric mixer at moderate speed until pale and fluffy, about 3 minutes. Beat in yolk, vanilla, and gingers. Add flour mixture and mix at low speed until just combined. Drop heaping teaspoons of dough about 3 inches apart onto ungreased baking sheets and bake in batches in middle of oven until golden, 13 to 15 minutes. Cool cookies on sheets on racks 5 minutes, then transfer with a metal spatula to racks to cool completely. Cooks' note:· Cookies keep in an airtight container at room temperature 3 weeks.