Hello,
I started my first attempt at brewing on 12/5. I used 4 gallons of Musselman cider and 36 oz of apple juice concentrate with S-04. OG was 1.056.
I checked it on 12/10, it was down to 1.000. I added another gallon of cider, and 9 more ounces of concentrate (measured 1.056 again)...