I have been trying to figure out whats in the juice that comes with the kit. Well really, whats the difference in a 23L kit and a 10L kit when water has been added to make 6 gallons? Is the 23L pure grape juice? Is the 10L watered down juice? RJS has an En Premier line that is 18L and is a high dollar kit, on the other hand they have a Premier Cru line that is 23L and is quite a bit cheaper. What is the difference? If they take 23L of must and concentrate it down to 16L or 10L, then you add water to bring it back to 23L shouldn't they be the same?