Heavy cream, candied ginger and a quarter-cup of cognac makes this an ambrosial pumpkin pie. The ginger and cognac perfume all the other ingredients, and the cream gives the filling a luscious, velvety texture. Everything is stirred up in a large mixing bowl and poured into a prepared crust. The pie emerges from the oven 30 minutes later, set and beautiful. Cool and serve with whipped cream.