The three major things which are unusual about this pie are what makes this pie so special. First is the addition of the Boiled Cider. Second is it's long baking time of 2 hours, and third is the instructions to not cut and serve until it is COMPLETELY cool or the next day. I found this recipe on the King Arthur Flour Website. It is a wonderful pie. In fact I think it is probably the best apple pie I have ever made. If you wish you can substitute the boiled cider for frozen concentrated apple juice but since it is less concentrated than the boiled cider the flavor will not be as intense. Boiled Cider can be ordered online from several cidermills on the east coast or from King Arthur Flour. The cider mill in Vermont sells their's the cheapest. Since the amount used in this recipe is only 1/4 cup, a pint bottle would make several pies. It can also be used as a topping for many things since it is actually a syrup with a very nice strong apple flavor similar to the taste of Apple Butter. Using either a KitchenAid Mixer or a Food Processor with short pulses of power works very well for mixing the dough. NOTE** Here's a helpful hint--Put sliced apples into a water bath and few tablespoons of lemon juice while waiting to avoid browning. Preparation time does not include chilling time of the dough.