Postby AlexP » Thu Aug 20, 2015 4:28 pm
Less starting sugar will ultimately lower the alcohol. The grains themselves keep the alcohol level low, so the biggest potential for alcohol to rise is after you strain it and you store it. Avoid adding any extra sugar or juice for the second ferment and drink it as fresh as possible. The yeast is very active during the summer which is what is responsible for the alcohol, so it is common to have increased alcohol this time of year. A consistently cooler environment usually helps make it more bacteria instead of yeasty (possible alcohol). And sometimes if you are using a recipe that has tons of minerals / supplements, that can also contribute to excess yeast and alcohol.
Alex