The juice was purchased at a local store, it was unpasteurized and
unpreserved. Preservatives (sorbate in particular) prevent the yeast
from reproducing and can leave a bad taste behind. The sugar was
added to increase the alcohol content to the desired 7.5%. The cider
was bottled with 3/4 cup of sugar and more yeast.
The extra time allotted before bottling allowed the cider to be
extremely clear before bottling. The addition of the extra yeast,
though, clouded it somewhat and has lead to noticeable precipitation.
It took longer than expected for the cider to carbonate and didn't
achieve the expected level. This is probably due to the amount of
sugar used.