These kits are easily modified to increase the alcohol content and
extend shelf life. I generally add sugar to my Niagra Mist kits to
bring the SG up to about 1.085 - 1.090 and extend the time period and
extra month or two. Have been very please with the results. My wife
loves the Peach and Tropical Fruit.

I have also heard of people adding half of the sweet reserve at the
start and half at the end. This still gives the flavor of the wine but
reduces the sweetness.

enjoy
JD