108 lb Moscato wine grapes (Top Brass. Earlimart, California)
471 g sugar
7.5 g pectic enzyme
12 g yeast energizer
1 Pack Red Star Premier Classique (formerly Montrachet)
The juice had a density of 1.09 g/ml, and 21 Brix by refractive index which corresponds to 11% alcohol. The density implies the Brix is actually 23. The average of 22 Brix would give 10.5 which is too low.
The grapes were very juicy and I am estimating 8 gallons of juice. That is 2 5/8 gallons per 36 lb crate. Juicy grapes are often less sweet. Calculations show that 660 g of sugar should bring this to 12.6% alcohol. I heated this amount of sugar in a quart of juice in the microwave, and was able to dissolve almost all the sugar without too much heat.
The fermentation went vigorously, and had a creamy top by the next morning.
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