Quantcast

potassium metabisulfite and yeast question

Wine Making Talk

Help Support Wine Making Talk:

Joined
Sep 20, 2017
Messages
21
Reaction score
3
Hi everyone,

I'm purchasing 10 cases (lugs) of grapes.

I've been advised to add 1 teaspoon of potassium metabisulfite right after crushing. Is this amount accurate?

I've also been advised to add 20 packs (5 grams each) of yeast 24 hours later. Is this amount accurate? I was told that the general rule of thumb is 2 packs per case. Just wanted to double check this.

Mario
 

salcoco

Veteran Wine Maker
WMT Supporter
Joined
Jan 1, 2007
Messages
2,853
Reaction score
1,146
Location
Kansas
don't know how much you lugs weigh but 12-15 lbs of grapes make one gallon of finished. wine.

k-meta dose would be 1/4 tsp per 5 gallons of fished wine.

yeast dosage is one gram per gallon of finished wine. assuming 36 lbs a lug=360lbs divided by 15 equals 24 gallons of finshed wine so 5 packets at 5 grams each should do it for the yeast.

don"t forget the yeast nutrient. Hydrate the yeast with Go-Ferm at 1.25 grams per gallon of finished wine in 17ml of water for each gallon. once ferment starts at Fermaid-K at rate of one gram per gallon.
 

salcoco

Veteran Wine Maker
WMT Supporter
Joined
Jan 1, 2007
Messages
2,853
Reaction score
1,146
Location
Kansas
yes I am aware that the additives are to crushed grapes, but to make the calculations easy to do I use the anticipated wine that will be made once the crushed grapes are fermented and pressed that is the finished wine. This assumption is fairly accurate as the amount of juice produced when crushed is very close to the amount of wine you will have after pressing.
 

berrycrush

Senior Member
Joined
Jul 17, 2013
Messages
530
Reaction score
97
If the grapes are in good shape, you can do without any K-meta until fermentation completes. That's what I do.
 

Latest posts

Top