Mountain Vinegar Pie (bob Stein)

1 Baked pie shell
1 c Sugar
2 Eggs
2 tb Vinegar
2 tb Flour or cornstarch
1 c Water
Sm lump o’ butter
1/2 ts Lemon extract

Combine sugar, eggs, vinegar, flour (or corn starch) and water in a
double boiler and cook till thick and smooth, stirring occasionally.
Just before removing from heat stir in sm lump o’ butter and the
lemon extract. Pour into baked pie shell. If desired, the pie may be
topped with frosting or whipped cream.

From “Hillybilly Cookin’–Mountaineer Style”.

From the files of Ellen Cleary From Rich Harper:

Yields
4 Servings