Very disparate fermentation progress

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Flufnagel

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Hi all,

I’ve got a bucket each of Zinfandel (26 brix), Barbera (22), and Merlot (22.8) in primary, each from a lug of grapes treated exactly the same way.

Grapes were crushed on the same day, sulfited the same amount (1/8 tsp), pitched one 5g pack of EC-1118 in each bucket on 9/8. That was four days ago.

I’ve been punching the caps regularly since then. Today I decided to take a gravity check using my hydrometer. The results were very surprising.

Zin was at 1.003. Barbera was nearly dry, 1.000. The Merlot… was at 1.054! And it is clearly fermenting. I can smell the CO2 and there’s plenty of foam when I stir it. It’s sitting at 76°F.

I added a teaspoon of Fermax. Any clue how such a dramatic discrepancy would happen? Is it a nutrient issue?
 

CDrew

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It's just normal. Just monitor carefully and make sure it doesn't get stuck. I had a Sauvignon Blanc and a Semillion right next to each other with identical amounts, yeast, nutrients, treatment and the Semillion took 5 extra days to go dry. Don't sweat it.
 

Flufnagel

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It could be a nutrient issue, certainly. Or it could just be Fricking Merlot strikes again. It sometimes is cantankerous.
This is my first time doing a Merlot so I’m not familiar with that phenomenon! Glad to know that it does have a reputation.
 
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