Muscato and Cabaret Sauvignon Update

As described below, I made the grape juice from the Muscato grapes, and fermented it for 7 days in open top primary fermentor before transferring to a demijohn. I got about 18 liters yield from the three cases of grapes. I did not adjust the sugar content.

I tracked the refractive index to monitor the fermentation:

27 Sept   23 (so called Brix units)
28 Sept   15
29 Sept    12
30 Sept     9
1  Oct       8

The book says that the refractive index should go negative before moving to a secondary fermentor, but I did not to that.

It has been a week since then, and the wine is slowly clarifying. The wine is not evolving carbon dioxide quickly though the trap though, so I am a little worried.


=======================================================================

The cabaret sauvignon fermentation started more slowly. I monitored the refractive index twice a day since I was worried about it.

27 Sept   pm      24.4 (so called Brix units)

28 Sept  am       24.1

               pm      22.8  

29 Sept  am       21.8

               pm      19.7

30 Sept  am       15.8

              pm       13 

1  Oct    am       11.6

              pm      10.3

2 Oct     am        9.7

Similarly I wish I could have let this go farther. I pressed the grapes, and got about 36 L from the four cases of grapes.  

2010 Muscato

The grapes were juicy, but there were some
past their prime. This may produce a sweeter flavor,
but keep the yield in juice per box down.

I am making a Muscato, also called Muscatel or just Muscat, because my brother Glenn has made some excellent Muscato, and it is useful for blending with other wine. Also my DW likes it, although I'd need to finish it sweet for her to really like it.

2010 Muscato Recipe

72 lb Muscato grapes (Medaglia D-Oro, Stockton CA) 
4 g potassium bisulfite
5 g pectic enzyme
4 g yeast energizer
1 packet of Red Star Pasteur Champagne yeast from Red Star (added the next day)

I crushed the grapes in less than an hour --they were very juicy -- and then pressed them. The pressing was hard because they squeezed through all the gaps in the press. They squirted out of the wooden cage and made a mess. Later I pressed the escaped grapes in a nylon bag.