c("Preheat the oven to 425 degrees Fahrenheit.", "Combine sugar, flour, and lemon zest in a saucepan; stir together until thoroughly blended.", "Add cider vinegar while stirring or whisking  constantly; add the water.", "Place over medium heat; bring the mixture to a boil and cook, stirring constantly, for 1 minute.", "Remove from heat and stir a little of the hot mixture into the eggs; stir the warmed egg mixture into the remaining hot mixture.", "Stir in the butter.", "Pour the mixture into the prepared pie shell.", 
"Bake for 10 minutes at 425 degrees Fahrenheit.", "Reduce heat to 350 degrees Fahrenheit.", "Continue baking for 30 minutes more.", "Remove the pie from the oven and let it cool completely before serving.", "(The  filling will seem quite liquid, but will firm as the pie cools.)", "This pie has pretty much the same ingredients as the one above, but the  method is different and therefore you end up with a slightly different pie.")