Vinegar Pie ( A Recipe of the Early Pioneers)

 1 Cup Vinegar
2 Cups Water
1 Cup Brown Sugar
2 Tbs butter
1/2 Cup flour
Water
1 recipe for plain pastry

Combine vinegar, water and sugar and bring to a boil.  Add butter and stir until it melts.  Mix the flour with a little of the cold water till smooth.  Add slowly to the boiling liquid and stir until thickened.  Line a plate with pastry in criss-cross fashion.  Bake in a hot oven (450 degrees F) for ten minutes; reduce heat to moderate (350 degrees F)  and bake about twenty five minutes.  Makes 1 nine-inch pie.