I used 18 cans of apple juice concentrate and let that ferment with champagne yeast and filled the water to about 4.75 gallons and the OG was 1.056 and finished at 1.000. I added 4 cans of concentrate to bring the FG up to 1.020 because I wanted something sweeter closer to woodchuck. It has been carbonating in the keg for a couple of days and I have had a couple of glasses so far and it has been great. I can not wait for it to become fully carbed.