In a large saucepan, mix:
½ cup sugar
small can (1/2 cup) evaporated milk
½ cup water
Bring mixture to a boil.
Mix and beat well:
½ cup sugar
2 heaping Tbsp. flour
4 eggs
Add to the boiled mixture and add 1 tsp. vanilla. Pour into unbaked pie crust or glass dish for oven.
Bake at 350 degrees for 15 minutes. Reduce temperature to 325 degrees and bake for another 25 minutes.