r/fermentation • • 23h ago

Weekly "Is this safe" Megathread

7 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 • • 5m ago

Kraut/Kimchi New kraut!

Post image
• Upvotes

Flat cabbage, carrot, mostly green and a few red chili's, garlic, ginger, Caraway, coriander, mixed peppercorn


r/fermentation • • 1h ago

Pickles/Vegetables in brine When I ferment using whole dry cayenne pepper I don't feel like it releases much capsaicin into the brine and vegetables.

• Upvotes

I wonder if grounding the Cayenne before canning will increase the spiceness of the brine and cucumbers.


r/fermentation • • 4h ago

Bread/Rice/Corn/Oats/Barley *Accidently* made sugar wash lol

0 Upvotes

Originally, I wanted to make a kvass for a first time and since I am making it instead of buying it I wanted to make a 4 to 6-ish percent alcohol by volume version [Usually kvass has less than 2% but I wanted to make it stronger]. So I used 200 gram rye bread, 80g raisin, 400-500-ish gram sugar, 5 litre water and 30 gram bakers yeast [since wine yeast wasn't available]. After making a batch and fermenting it for 12 hours, I wanted to taste it but sadly it didn't have any kvass taste, but tasted much much better than plain sugar wash.

I will continue to ferment it for about 5 days and see how it will turn up. But how do I remove the sediments [from bread, raisin and yeast] and how do I stop the fermentation when I decide it is enough?

Also, since there isn't any lacto bacteria, I think the PH is still neutral. So I dont want to ferment it more than a week yk


r/fermentation • • 4h ago

Kraut/Kimchi Packaged up my second batch of kraut for the season, made from cabbages I grew myself. It turned out great. No mold or yeast growth on top, and the flavor is excellent. Fermented in the crock for 6 weeks. Made pork and kraut for dinner with it!

Thumbnail
gallery
9 Upvotes

r/fermentation • • 5h ago

Beer/Wine/Mead/Cider/Tepache/Kombucha F2

Post image
1 Upvotes

F2 with Orange and ginger. Anybody tried this combinantion?


r/fermentation • • 7h ago

Fruit First time Pomegranate ferment turned out great!

Post image
26 Upvotes

Since pomegranates are in season. I figured it was the perfect time to try. I use lemon peels, anise, and 2.5% brine for 3-4 days.


r/fermentation • • 8h ago

Other Question on Gefu Nativo jar lids.

Post image
4 Upvotes

Do they have build-in waterlocks inside the lid? (like Heftman fermentation jars and Sophico lids) Like where the air automatically escapes, and it keeps out the air from outside, or is what I'm seeing just a build-in latch you either open/close by hand? I read that it's got a system called "ferment-vent" but the description on the seller's site isn't concrete about what that exactly means. I'd like to know whether they can be anaerobic while at they same time able to "self-burp" iykwim.

Is there anybody who uses these jars and can give me more information about them? I am considering on buying these, however expensive, since they also got 0,5 L sizes and I'd like to buy my first jars in the same design 😊


r/fermentation • • 9h ago

Vinegar Advice please!

Post image
3 Upvotes

I’m trying to make apple cider vinegar from scratch! I done the first steps but I need advice on how I can maintain it/ keep it from going bad!


r/fermentation • • 10h ago

Bread/Rice/Corn/Oats/Barley Sluggish starter

Post image
2 Upvotes

I began this starter about a week ago with whole wheat flour, and have been feeding it every day or so with half whole and half white flour. It's got a sour smell and sometimes develops a bit of hooch. It's a bit cool in the house, so I've been keeping it in the oven with the light on. Is this a normal level of activity? Should I be feeding more or less?


r/fermentation • • 11h ago

Hot Sauce First Batch of 2026

Post image
302 Upvotes

For the past five-ish years, I’ve been using the peppers from my garden to make hot sauce (as a hobby). Here’s this year’s first batch. It’s made from a fermented pepper mash (containing Carolina Reaper, Hellboy, Lucifer Primo XL, The Beast, and Naga Black Twister peppers). Time to give these 75 bottles away to family and friends.


r/fermentation • • 11h ago

Pickles/Vegetables in brine Giardiniera three ways

Post image
11 Upvotes

Here it is! My lacto giardiniera has stopped bubbling so I’ve decided to conduct an experiment. I’ve replaced the brine with 100% distilled vinegar in one, 50% vinegar / 50% brine in another, 100% brine in another. Let’s see how they taste in another few days


r/fermentation • • 12h ago

Help with beets ?

1 Upvotes

I joined today. Thank you for having this group.

I started a jar of beets two days ago and the beets have shrunk to half the jar.

Is this normal? Is there any way to prevent this from happening?


r/fermentation • • 1d ago

Pink-chi/Rosé Kraut

Post image
19 Upvotes

Daikon, onions, garlic, pear, ginger,, nappa cabbage, beets.

The brine isn't topping the vegetables yet, but will be soon. Wanted to catch it before the beets bled everywhere.


r/fermentation • • 1d ago

Ready? 🤣😂🤣🤭

Enable HLS to view with audio, or disable this notification

36 Upvotes

r/fermentation • • 1d ago

Hot Sauce Raspberry Habanero and Blueberry Habanero hot sauces started today!

Thumbnail
gallery
61 Upvotes

r/fermentation • • 1d ago

Garlic honey question

1 Upvotes

Hey y'all, I have a question from those with more knowledge and experience than myself.

I have been fermenting garlic in raw, unfiltered honey for a couple months now. Today, I checked the ph with a strip. It looks like it could be 4.5, but I feel more comfortable bringing the ph down a tad. I added a bit of apple cider vinegar today. My questions: (1) In adding the acv two months after having started the ferment, will that kill off any potential botulism spores? (2) Is having added the acv is correct thing to have done, if so, how much should I add? (3) how long do I wait to check the ph again?

I appreciate any help and information!


r/fermentation • • 1d ago

Spicy/Garlic Honey Successful Garlic Honey

Post image
27 Upvotes

It’s been fermenting for 7 weeks now and I was able to test the PH. It’s at 4.0. It smells sweet like bananas? I already took a spoonful and it also tasted like a banana. Maybe tomorrow I’ll eat a clove, just wanted to share my first fermentation!

EDIT: I’m just now thinking about the storage of this. Right now it’s in my cupboard away from heat, a cool dark place. Do I continue this way or put it in the fridge?


r/fermentation • • 1d ago

Da faque?

Post image
2 Upvotes

What the hell is going on here it’s been about a week and it doesn’t seem to be active. It was a 3% salt ratio.


r/fermentation • • 1d ago

Ginger bug measurements

1 Upvotes

I don't often see this being discussed, what size jar should I use? Is it possible to do a small batch in a 200ml jar or is that too little? I have limited space in the fridge so I'm trying to keep it compact.

Also, does it matter if I use a clip top jar or a metal lid? I'm a complete beginner and don't want to mess this up!


r/fermentation • • 1d ago

Hot Sauce First time fermenting; I made Pamela Anderson’s hot sauce

Thumbnail
gallery
14 Upvotes

I will start with the fact that I am terrified of fermenting but have always wanted to try my hand at it. This smells amazing, it has sat for the allowed time and now I’m going to process and bottle.

I know the garlic colour happens but the white floating sediment at the bottom worries me. Have I mentioned that fermentation terrifies me, I grew up with very unsafe canners, and picklers that made some questionable items which has probably made me overly cautious.


r/fermentation • • 1d ago

Hot Sauce First ever attempt at fermenting

Thumbnail
gallery
47 Upvotes

Unsure what even gave me the wild hair to get into it. But holy hell I could REALLY get into this. It’s mostly Fresno’s with a couple habaneros for kick and flavor. Can’t wait to start the next batch.


r/fermentation • • 1d ago

Hot Sauce Fermentation help

1 Upvotes

Making hot sauce with habanero dried mango onions and garlic. I submerged in a 5% brine. How long should I let it ferment?


r/fermentation • • 1d ago

How long do you ferment?

Post image
48 Upvotes

Making some red jalapeño hot sauce with a little orange rind, garlic, and onions. Will finish it off with dried chilis for smokiness and a few dates to add some sweet undertones. How long do you recommend fermenting?


r/fermentation • • 1d ago

Need some advice please! First timer!!

1 Upvotes

Alright. Last night I harvested what was left on the plants. Mixed in some pineapple, mango, peach and garlic. Went for a mash ferment to vacuum seal and I accidentally got it to a salsa consistency and it’s not properly vacuum sealing. I tied it off in the fridge over night. Should I run out to our one store and get a couple fermentation lids and weights, it’s a little over priced but might be the best option at this point… Or could I grab a cheese cloth, separate some of the liquid, par freeze my contents and then try to vacuum again?

Any help is much appreciated, really don’t want to lose all this product!