Process flour and water in blender just until smooth. Pour into saucepan. Add
white vinegar Let sit while you combine the other ingredients in the blender.
Put egg plus enough water to make 2/3 cup in blender container. Add vegetable
oil, sugar, salt, dry mustard, lemon juice and paprika Whirl in blender until
smooth. Heat flour mixture in saucepan until thickened. Pour hot mixture into
blender and blend until smooth again. Yield 3 1/4 cups