Lemon Meringue Pie

Sift together into the top of a double boiler
1 C sugar
3 T flour
3 T corn starch
1 t salt

and add
1 1/2 C boiling water

cook in the double boiler until thick, about 15 minutes.
Add
1/2 C lemon juice
grated rind of 1 lemon
2 egg yolks, slightly beaten

Cook about 2 minutes longer. 
Cool. Turn into cooled pie shell.

Beat 2 egg whites until frothy
Add 4T sugar and 1/4 t baking powder.
Beat until it stands in peaks.

Add meringue on top of pie.
Brown in 325 F oven, about 15 minutes.