TL;DR: Yes, you can turn cider into vinegar by guiding it through two stages of fermentation — first alcoholic fermentation, then vinegar fermentation. The full process takes about 5–7 weeks.
Can you turn cider into vinegar? Yes — and that’s exactly how apple cider vinegar is made. Vinegar is simply cider that has undergone a second fermentation, where bacteria convert alcohol into acetic acid.
This guide walks through the full cider to vinegar process, including timing, steps, and what to expect at each stage.
How Cider Turns Into Vinegar: The Two-Stage Process
Making apple cider vinegar involves two stages:
Stage 1: Alcoholic Fermentation
- Apple juice is fermented by yeast
- Sugar converts into alcohol
- Takes about 12 days at 68–75°F
This creates hard cider, which is required for vinegar fermentation.
Stage 2: Vinegar Fermentation
- Vinegar Mother is added
- Bacteria convert alcohol into acetic acid
- Takes 3–5 weeks
A thin film may form on the surface — this is normal and part of the process.
Important: Oxygen is required. Use a breathable cloth cover, not an airtight lid.
What You Need to Make Cider Vinegar
- Preservative-free apple juice
- Active dry yeast
- Vinegar Mother
- Glass fermentation jar
- Breathable cover
- Sanitizer
- Bottles for storage
Easiest option:
Learn cider basics here:
How to Make Hard Cider
Vinegar Fermentation Steps
Day 1: Start Fermentation
- Sanitize equipment
- Add apple juice
- Add yeast
- Cover with cloth
- Store at 68–75°F
Ferment for 12 days.
Day 13: Separate Yeast
- Pour cider into a clean container
- Leave sediment behind
- Save or discard yeast slurry
Add the Mother
- Add vinegar Mother to jar
- Return cider
- Stir to introduce oxygen
- Cover and ferment again
Ferment for 3–5 weeks.
Day 34+: Harvest and Bottle
- Remove Mother
- Reserve for next batch
- Bottle finished vinegar
Store in a cool, dark place or refrigerate.
How Long Does It Take?
- Days 1–12: Alcoholic fermentation
- Weeks 3–7: Vinegar fermentation
Total time: about 5–7 weeks.
Can You Use Store-Bought Cider?
Yes — but check for preservatives.
- Safe: Ascorbic acid (Vitamin C)
- Avoid: Potassium sorbate, sodium benzoate
These prevent fermentation.
Does Alcohol Level Matter?
- Ideal: 5–8% ABV
- Too low: weak vinegar
- Too high: bacteria struggle
Standard cider usually falls within the ideal range.
Do You Need a Vinegar Mother?
For consistent results, yes.
- Starts fermentation reliably
- Produces better flavor
- Reusable indefinitely
Common Mistakes
- Using juice with preservatives
- Sealing container airtight
- Skipping sanitization
- Not removing yeast before adding Mother
- Forgetting to save the Mother
Can You Control Vinegar Flavor?
Yes, based on:
- Fermentation time
- Juice quality
- Temperature
- Alcohol level
What Happens If You Let It Sit Too Long?
The vinegar becomes more acidic and sharp. It won’t spoil, but flavor may become too strong.
Final Thoughts
Yes — turning cider into vinegar is a straightforward process once you understand the two stages. With the right setup and patience, you can produce consistent homemade vinegar and reuse your Mother indefinitely.
Frequently Asked Questions
Can you turn cider into vinegar?
Yes. Cider becomes vinegar through a second fermentation where bacteria convert alcohol into acetic acid.
How long does it take?
About 5–7 weeks total.
Do you need a vinegar Mother?
For consistent results, yes.
Can cider turn into vinegar naturally?
Yes, if exposed to oxygen and bacteria.
What kind of cider works best?
Preservative-free apple juice or cider.
Why didn’t my vinegar form?
Likely due to preservatives, lack of oxygen, or missing bacteria.
Can you reuse the Mother?
Yes, it can be reused indefinitely.
Start Making Apple Cider Vinegar
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