WineXpert F-pack in primary

[DaniJ323]

I just started an Island Mist Green Apple Riesling kit, I followed someones advice and added half the F-pack to the primary. Do I need to refrigerate the other half now that it has been opened?


Thanks ;o)

 

[Tom]

It wouldn't hurt. just keep it sealed as best you can. Are you planning on bumping the % as well?

 

[jontallon]

I refrigerate the opened F-pack as well. Just warm it back up to room temperature before adding it at the end.

 

[Dugger]

Although I haven't added up front myself, I understand adding half should raise the alcohol by about 2%.

 

[DaniJ323]

...Are you planning on bumping the % as well?

That was my intention. I also added 4 cups of sugar, it only brought up the SG to 1066.
BTY - how do you figure potential alcohol?

 

[Dugger]

I use starting SG minus finishing SG times 133.
eg
OG = 1.066
FG = 0.996
diff = 0.070 x 133 = 9.3%

 

[winemaker_3352]

That was my intention. I also added 4 cups of sugar, it only brought up the SG to 1066.
BTY - how do you figure potential alcohol?

This is what i use:

Starting SG - Ending SG * 131.8 = PA

I.E. = 1.085 – 0.996 * 131.8 = 11.7% PA

There are a few different equations - not sure how the equation numbers are actually figured out to get the PA.

 

[midwestwine]

That was my intention. I also added 4 cups of sugar, it only brought up the SG to 1066.
BTY - how do you figure potential alcohol?

Just use this its very easy

http://www.vintnerresources.com/index.php?option=com_content&view=article&id=1444&Itemid=118

 

[winemaker_3352]

Just use this its very easy

http://www.vintnerresources.com/index.php?option=com_content&view=article&id=1444&Itemid=118

Yeah - that is one of the equations i have found as well. That tool rounds up to the nearest whole though.

The equation it uses is this:

startsg - endsg / .00736

when i do this 1.086 - 1.000 / .00736 - i get 11.68. The tool says it is 12% ABV.

 

[Dugger]

For rough guesses at what your gravity is, just remember a few starting gravities i.e. 1.060 yields about 8%, 1.075 about 10%, and 1.090 about 12%.
Most wines finish just under 1.000 so these numbers will be close.
Or .. the easiest way - look at the hydrometer and it will tell you potential alcohol.
If you need more accurate alcohol by volume (ABV) at completion, use the formula.