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Marthe48

(22,481 posts)
Wed Dec 3, 2025, 12:02 PM Yesterday

My yeast is a dud

I've had the yeast in the pantry and it's best buy date is 7/26. I finished the old jar for Thanksgiving rolls and added a little from the new jar. The rolls weren't my best this year, but I put it down to letting them raise once, not twice as usual.

I started a loaf of bread today. I did everything as usual, same ingredients, same timing, and used the yeast from the fresh jar. I make a starter and let it sit 1 hour. Then I add the rest of the flour, knead, shape and let it raise for an hour. Then bake. I noticed that the starter was kind of flat, but thought maybe I'd used more water than usual. I added flour and kneaded it. It felt okay, but not as elastic as usual. I shaped it and let it rise for an hour. When I checked, it hadn't raised. I brought it out and added a little more yeast and also heated the oven a little more. It is rising, but slowly. I proofed some of the yeast, and it is very slow. I'm going to try to return the jar.

I hope I can salvage the loaf. I read about slow rising bread, but it wasn't what I wanted to do today. Finding out your yeast isn't lively in the middle of baking is a bad experience, for sure.





6 replies = new reply since forum marked as read
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My yeast is a dud (Original Post) Marthe48 Yesterday OP
😕 buzzycrumbhunger Yesterday #1
I've had 10 year old yeast that was still ferouciously active Warpy Yesterday #2
Yeast I use usually does ok Marthe48 Yesterday #3
Be sure to check the ezpiratioin date on the jar Warpy Yesterday #4
We had a new jar of yeast fail too. Callalily 15 hrs ago #5
That's an idea! Marthe48 15 hrs ago #6

buzzycrumbhunger

(1,522 posts)
1. 😕
Wed Dec 3, 2025, 01:30 PM
Yesterday

I always store mine in a tightly sealed jar in the fridge. Even when I buy a ton and it sits for months and months, I've never had it fail.

Wish I had a substitute handy but work is killing me today and my brain isn't working...

Warpy

(114,316 posts)
2. I've had 10 year old yeast that was still ferouciously active
Wed Dec 3, 2025, 02:43 PM
Yesterday

It was commercial yeast sold in bulk at a health food store. It came in pellets instead of powder, and I think that had something to do with its remarkable longevity.

I know the only time I proof yeast in warm water and barley malt is when I know it's old yeast and I want to make sure it's still alive. Otherwise, I don't proof it before baking, I've killed it off that way too many times.

Marthe48

(22,481 posts)
3. Yeast I use usually does ok
Wed Dec 3, 2025, 06:06 PM
Yesterday

I keep the open jar or package in the freezer. I kept the unopened jar in my cool, dark pantry.

I'd start the yeast on its own for years, then learned I was proofing it Never too old to learn.

I am trying to make a sourdough starter, and it doesn't look promising. I'll try to exchange this jar.



Warpy

(114,316 posts)
4. Be sure to check the ezpiratioin date on the jar
Wed Dec 3, 2025, 06:21 PM
Yesterday

The last jar of yeast I bought had it stamped on the label. There might also be a lot or batch humber on it, you don't want a replacement jar from the same lot or batch, it would be dud yeast, also.

Hope the next one works out better. There's little worse for a bread baker than expecting bread and getting a brick.

Callalily

(15,286 posts)
5. We had a new jar of yeast fail too.
Thu Dec 4, 2025, 07:14 AM
15 hrs ago

I wrote the company and they sent me coupons for two free jars!

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