r/fermentation • • 6d ago

Weekly "Is this safe" Megathread

10 Upvotes

Welcome to this week’s dedicated space for all your questions and concerns regarding questionable ferments.

Fermentation can sometimes look a little strange, and it is not always easy to tell what is safe, and what needs to be tossed and started over. To help keep the subreddit clean and avoid repeat posts, please use this thread for:

  • Sharing photos of surface growth you’re unsure about.
  • Asking if your ferment has gone wrong.
  • Getting second opinions from experienced fermenters regarding questionable ferments.

‼️Tips Before Posting‼️:

  • Mention what you’re fermenting (e.g., kraut, kimchi, kombucha, pickles, etc.).
  • Note how long it has been fermenting, and at what temperature.
  • Describe any smells, textures, or off flavors.

Remember that community members can offer advice, but ultimately you are responsible for deciding if your ferment is safe to eat or discard. When in doubt, trust your senses.

Happy fermenting!


r/fermentation • • 3d ago

Weekly Commercial Resources and Events MEGATHREAD

3 Upvotes

Because we get a lot of individual requests for posts that may violate rule 6 about limited self promotion, we have decided that we will have a weekly MEGATHREAD for people who want to post events, (virtual and in person), products and apps related to fermentation. The general rules about using this channel for self promotion still apply and the thread will be moderated.

Thread specific rules:

  1. NO SPAM still applies. Don't be posting your event multiple times and every single week.

  2. If you have produced a fermentation specific software or app and are looking for beta testers or the app is free, this is generally ok. Posts that for monetary gain (ie trying simply gain customers but not really contributing the sub) will be removed.

  3. You must fully describe what your post is about and should disclose what you have to gain from it. If you are hosting a regional fermentation conference and a inviting folks to register, for instance, make sure that it's clear what the costs, etc will be.

Finally - this idea is a TEST. If it is a total catastrophe, we will go back to a simple case by case system.


r/fermentation • • 5h ago

Kraut/Kimchi Raw radishes are hard and the taste is overpowering. Will fermenting be worthwhile?

14 Upvotes

It was a very hot and very wet summer.

My radishes grew huge but taste way too spicy.

Will fermenting give a decent product or should I just try again next year?


r/fermentation • • 3h ago

Pickles/Vegetables in brine Lacto Giardiniera

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7 Upvotes

Cauliflower, green bell peppers, carrots, Serrano and guajillo chillies, oregano, rosemary. 2% brine. See you in a couple of weeks


r/fermentation • • 27m ago

Habanero Saga Continues…..

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• Upvotes

JFC. And he still had another bags worth on the plants. Baked potato for scale.


r/fermentation • • 14h ago

Other Advice on my fermented mustard?

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32 Upvotes

This ferment is basically a toddler at this point. We've moved house three times, and doing the math is probably four years old.

Looks and smells fine, when I cracked it open, it smelt very spicy but mellowed out quickly.

Pretty sure I added onion and garlic to the bottom.

  1. Is this still safe in theory? In my head it's no different to a hot sauce that's gone on a long time.

  2. Should I strain and blend? What is the next step here?

Thanks!


r/fermentation • • 1h ago

Hot Sauce Hot sauce: difference in taste between weeks and a month

• Upvotes

So I’m a beginner fermenter and I’ve only made a couple batches of hot sauce in my one jar. I’ve only done 10-15 days because I’m impatient, but this jar I will hold for a whole month.

I know that there’s probably a huge difference between a months vs a year, but is there much of a difference in taste between 2 vs 4 weeks?


r/fermentation • • 48m ago

Kraut/Kimchi Really happy with this one.

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• Upvotes

Ginger, cabbage, onion, and carrot.

No added spices or herbs.


r/fermentation • • 2h ago

Ginger Bug/Soda Soda starter made from grapes near a road... Safe?

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2 Upvotes

Sorry for the background mess, I just want to make sure that this might be safe to consume.

I collected some grapes out of a suburban road, seemed like a road that is not super used but definitely sees some activity probably on the daily.

I used those grapes to make an experimental soda starter and it bubbled like crazy, so I decided to try and make some soda out of it and it actually tastes really good and the fizz is super nice...but the fact it comes from the side of a road makes me a bit unsure if I can down this bottle.

Thoughts?


r/fermentation • • 3h ago

White lines?

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2 Upvotes

Fermenting peppers onions and garlic to make a hot sauce and I’m seeing some white lines on some of the peppers and one of the glass weights. Nothing on top of the brine. Can anyone tell me what it is?


r/fermentation • • 8m ago

Beer/Wine/Mead/Cider/Tepache/Kombucha Molasses Small Beer: Electrolytes from the Revolution Still Pack a Punch

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• Upvotes

TLDR; Molasses + a pinch of Salt in a bottle of water is a remarkably good/cheap substitute for Hydration packets. George Washington made a refreshing low ABV "small" beer from molassesthat is actually a pretty great electrolyte drink. I dig into the nutrient profiles in detail. Paywall removed.

Nutrient Pedialyte Classic (12 oz) Blackstrap molasses (1 tbsp) Daily Value
Sugar 5 g (10%) 11 g (22%) 50 g added sugars*
Sodium 390 mg (17%) 7–35 mg (0–2%) 2,300 mg
Potassium 280 mg (6%) 293–343 mg (6–7%) 4,700 mg
Chloride 440 mg (19%) Not established 2,300 mg**
Calcium Not significant 41–145 mg (3–11%) 1,300 mg
Iron Not significant 0.9–1.5 mg (5–8%) 18 mg
Magnesium Not listed 48 mg (11%) 420 mg
Zinc 2.8 mg (25%) 0.06 mg (<1%) 11 mg

r/fermentation • • 5h ago

Pickles/Vegetables in brine Lactofermented Pickle Woes

2 Upvotes

Started a batch of pickles 1.5 weeks ago in a clean glass jar. Small cucumbers were submerged in 5% brine with garlic and grape leaves. The cucumbers were a mix of random ones someone left at the office and from my garden. Prepped the cucumbers with a thorough wash and by cutting off the ends.

Noticed bubbling and cloudy brine immediately- normal stuff. There was some kahm yeast on the surface (not fuzzy, looked like kahm i’ve seen before). But now there is a strong earthy smell, like mildewing leaves or maybe a little like a hippie incense store. It’s pretty nasty and I think this batch is a goner. The texture of some of the pickles is also squishy like a water balloon, or some of them feel firm like they’re full of gas.

Anyone know where I went wrong here?


r/fermentation • • 4h ago

Can I use leftover dill pickle juice for processing horseradish root?

1 Upvotes

Hello, I just got my hands on some horseradish straight from the soil, and looking at how to preserve/process it. I will probably grate it down for this and recipes show to add vinegar, salt, sugar. I don’t have vinegar at home right now but I have loads of leftover pickle juice which has similar ingredients. Would this work the same or is there some science behind the reaction of adding separate ingredients at the same time of adding the grated horseradish?


r/fermentation • • 22h ago

Kraut/Kimchi Kimchi

19 Upvotes

I think my kimchi has come along nicely.


r/fermentation • • 21h ago

End-of-season harvest

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11 Upvotes

Freeze warning tomorrow. I now have an abundance of Hungarian and Banana peppers and a lot of green San Marzano tomatoes. What do y’all think? Just cut them up and brine them at 2.5-3%? I feel like I’m missing some opportunities by just doing that. Please share your awesome ideas or recipes.


r/fermentation • • 1d ago

Other When you are new to the hobby, it taste good with everything, kraut and PB for breakfast

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54 Upvotes

Actually yummy


r/fermentation • • 1d ago

If anyone’s done fermented hot honey, how can you tell if it fermented?

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71 Upvotes

About 2 weeks with Jalapeños in honey. I read you don’t always see any bubbling. It tastes great. PH started and ended at 4 according to a diluted solution and Hydrion strips. How do I know if fermentation took place? I had a vacuum lid on.


r/fermentation • • 1d ago

Ginger Bug/Soda Let this be your reminder...

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806 Upvotes

Did this blackberry gingerbug coat all four walls, the ceiling, floor, everything I'm wearing and escape into the hallway? Yes, yes it did.

I'm looking forward to spending my weekend repainting 😅


r/fermentation • • 1d ago

Other Mao Doufu (Fuzzy/Moldy Tofu)

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148 Upvotes

interesting process but honestly feel like the product was not entirely worth the effort. I fried it up (not pictured) and it was very mild, honestly tasted not far from normal tofu. maybe a little tangy with a somewhat softer texture (in a way thats distinct from soft tofu; hard to describe). pretty gnarly looking though

maybe next time I would extend process to make fermented bean curd (furu)


r/fermentation • • 10h ago

Are these pickles safe to eat?

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0 Upvotes

r/fermentation • • 1d ago

Hot Sauce My collection of homemade sauces.

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5 Upvotes

r/fermentation • • 1d ago

Scotch bonnets seem to be in peak season for imported stuff where I live so fully embracing them

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3 Upvotes

Only on day 5


r/fermentation • • 1d ago

Kraut/Kimchi My first kimchi!

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69 Upvotes

r/fermentation • • 1d ago

Pickles/Vegetables in brine Meet Gerda, my first green ferment

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10 Upvotes

Recipe I used is from the Dutch book "Fermentista" by Marta and Joanna Klejman.

I used: cherry tomatoes, red onion, gloves of garlic and basil. I couldn't get the salt water (2,5%) to cover everything even as I followed instructions to fill the jar until it flowed over and sealing it afterwards. So I found a ceramic cup from my grandma, sterilised it, and used it as a weight but I am going to buy proper weights soon.

According to the recipe, this should stay fermenting in a closed off jar for at least 7 days in a temperature between 18 and 22 degrees celsius. In those 7 days I have to clean both the jar and bowl with cold water daily. After that it goes in the refridgerator and will stay good until 8 weeks. My home is steadily 20 degrees celsius these days.

What worries me is that the recipe states the jar should be closed off airtight, but in this subreddit, I see everyone using stuff like waterslots and suggesting on letting things burp.

Is Gerda actually going to be okay? 🥲 Or will she explode?


r/fermentation • • 1d ago

Loaded these up today for hot sauce!

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49 Upvotes

Left is Sereno, jalapeno, tomatillo, garlic and onion with a bell pepper cap. Right is habanero, garlic, shallot, onion and green apple.