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Fermentation stopping prematurely?

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kahwa

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Novice cider/winemaker here. Looking to make a somewhat high ABV cider/wine (i.e., 10% - 12%), and not concerned about clarity or bottling, at this point.

Tried a couple of one-gallon batches over the past month or so, but not achieving the desired results.

First batch was one gallon of store-bought, pasteurized apple juice with no preservatives. In the plastic bottle it came in, I drained off enough juice to add in three cans of concentrate and one cup of sugar syrup.

Starting Brix% = 29 (SG = 1.113). Used Lalvin EC-1118 yeast, and checked to ensure it was long before the expiration date. Rehydrated approximately 1/5 the packet of yeast per the instructions on the side of the package, then added to the mix. Covered the top of bottle with a paper towel, secured with a rubber band, for a couple of days. Then plugged the top with a rubber stopper and three-piece plastic airlock filled part way with diluted Star San. After one week with a lot of fermentation activity for the first several days, in an approximate 70-degree environment, the Brix% was down to 16 (SG = 1.063).

I let it go for another week, this time with much less fermentation activity, and measured approximately the same Brix% at the end of week two.

I added in another approximately 1/2 packet of rehydrated yeast and, after one week, still had not much more fermentation activity, and about the same Brix%. At that point, I decided to just put it in the fridge and drink it. It tasted fine, and provided a slight buzz, but with an ABV of only approximately 6.5%, it wasn't exactly what I was hoping to achieve.

Suggestions?

Thanks in advance for your help. My apologies if I have done something obviously stupid.
 
Personally...I'd pinch the full packet of yeast. Can't really over pinch....but ya can under-pinch.

...and EC-1118 is like a buck a packet...

Cheers & good luck [emoji111]
 
Cool... so I will go with a full packet next time.

When you say starter, are you referring to rehydration of the yeast? If so, I did... rehydrated per the directions on the side of the packet. I think I went for 105 degrees for approximately 15 minutes in about 1 oz of water for half the packet.

Fermenting temp is approximately 70 degrees, plus or minus.
 
Cool... so I will go with a full packet next time.

When you say starter, are you referring to rehydration of the yeast? If so, I did... rehydrated per the directions on the side of the packet. I think I went for 105 degrees for approximately 15 minutes in about 1 oz of water for half the packet.

Fermenting temp is approximately 70 degrees, plus or minus.

I am referring to a starter as in pitching your yeast a couple days prior into about 1L of fermentable liquid to allow the yeast to reproduce and get strong before pitching in your batch. With that high of an OG you would want to pitch about 350 billion cells or so. Most packaged yeast only have about 100 billion cells in them.
 
I am referring to a starter as in pitching your yeast a couple days prior into about 1L of fermentable liquid to allow the yeast to reproduce and get strong before pitching in your batch. With that high of an OG you would want to pitch about 350 billion cells or so. Most packaged yeast only have about 100 billion cells in them.

Ah... definitely didn't know that. I will do that too. Thanks for the tip.
 

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