In my country obtaining a bottle of applejack is about impossible, while cider slowly gains some foothold. I have managed to obtain a few liters of apple cider for reasonable price and happen to have a decent quality freezer. I'd like to use freeze-concentration to produce some applejack from it, to have a glass of the legendary drink.
I know the ground theory of how that process is supposed to work, but I don't know any details. What is the right temperature? What kind of container should I use? Should it be covered/airtight to prevent alcohol evaporation? How much ice should I allow to form before removing it? Any special techniques of removing the ice? Also, I heard some account that you keep the ice and discard the liquid - is there any truth to that?