Brewing Apple Cider Vinegar in a Coffee Maker

Quick Answer

• You can technically run apple cider vinegar (ACV) through a coffee maker, but it’s generally not recommended for brewing beverages.
• ACV is highly acidic and can damage the internal components of your coffee maker over time.
• The taste and aroma of ACV will likely linger, affecting future coffee brews.
• If you need to sanitize or clean your coffee maker, a vinegar solution is effective, but it’s not for drinking directly.
• For drinking ACV, dilute it with water and consume it as a beverage, not through your coffee machine.
• Always check your coffee maker’s manual for specific cleaning instructions and warnings.

Who This Is For

• Home brewers curious about alternative uses for their coffee makers.
• Individuals looking for ways to clean or sanitize their coffee machines.
• Anyone wondering if they can make a hot ACV drink using their existing coffee maker.

What to Check First

Brewer Type and Filter Type

• Check: What kind of coffee maker do you have (drip, pour-over, single-serve pod, etc.)? What type of filter does it use (paper, permanent mesh, or none)?
• Why it matters: Different coffee maker designs have varying sensitivities to acidity. For instance, machines with complex internal tubing or heating elements might be more susceptible to damage from acidic liquids than a simple pour-over setup. Permanent mesh filters can absorb odors more readily than paper ones.
• What “good” looks like: Your brewer is a standard drip machine, pour-over cone, or French press. You have a clean, appropriate filter for your chosen method.

Water Quality and Temperature

• Check: Are you using filtered water for brewing or cleaning? What is the typical brewing temperature of your machine?
• Why it matters: ACV is already acidic. Using tap water with high mineral content can exacerbate the corrosive effects on your coffee maker’s internal components when combined with the vinegar’s acidity. While coffee makers heat water, ACV is not intended to be brewed at typical coffee temperatures for consumption.
• What “good” looks like: You are using clean, filtered water. Your coffee maker’s heating element functions correctly to heat water to its standard brewing temperature.

Grind Size and Coffee Freshness

• Check: Are you planning to brew coffee after running ACV through the machine? Is your coffee fresh?
• Why it matters: If you intend to brew coffee later, any residual ACV smell or taste will transfer to your coffee. ACV itself does not require grinding, but its presence can impact the quality of future coffee brews.
• What “good” looks like: Your coffee beans are freshly roasted and ground just before brewing for optimal flavor. You understand that ACV will leave a strong, lingering odor and taste.

Coffee-to-Water Ratio

• Check: What is the recommended coffee-to-water ratio for your brewer?
• Why it matters: This is relevant if you’re considering brewing a diluted ACV mixture. While not a direct coffee brewing ratio, understanding the principle of dilution is key. For cleaning, you’ll typically use a solution of ACV and water, not a concentrated brew.
• What “good” looks like: You understand typical brewing ratios (e.g., 1:15 to 1:18 coffee to water by weight) and can apply the concept of dilution if attempting to rinse the machine.

Cleanliness/Descale Status

• Check: When was the last time you descaled or thoroughly cleaned your coffee maker?
• Why it matters: ACV is often used as a descaling agent. If your machine is already due for a cleaning, running ACV through it might seem like a good idea. However, ACV’s acidity can be harsh, and using it when the machine is already dirty might lead to more residue buildup or damage.
• What “good” looks like: Your coffee maker is reasonably clean, or you are specifically using ACV as a cleaning agent according to best practices for your machine type.

Step-by-Step: Cleaning Your Coffee Maker with Apple Cider Vinegar

This workflow assumes you are using ACV for cleaning, not for brewing a beverage.

1. Empty the coffee maker: Remove any coffee grounds, filters, and used coffee from the carafe and brew basket.

• What “good” looks like: The brew basket and carafe are completely empty and clean of any coffee residue.
• Common mistake: Leaving old coffee grounds in the basket.
• Avoid it by: Always rinsing the brew basket and carafe after each use.

2. Prepare the ACV solution: Mix equal parts apple cider vinegar and water. For a standard 12-cup coffee maker, this might be around 4-6 cups of ACV and 4-6 cups of water.

• What “good” looks like: You have a diluted ACV solution ready to be poured into the water reservoir.
• Common mistake: Using undiluted ACV.
• Avoid it by: Always diluting ACV with water (usually 1:1 ratio) for cleaning to prevent damage.

3. Fill the water reservoir: Pour the prepared ACV and water solution into the coffee maker’s water reservoir.

• What “good” looks like: The reservoir is filled to its usual capacity with the cleaning solution.
• Common mistake: Overfilling the reservoir, which can cause leaks.
• Avoid it by: Filling the reservoir to the maximum fill line indicated on the machine.

4. Place an empty carafe: Position the empty carafe on the warming plate.

• What “good” looks like: The carafe is securely in place to catch the cleaning solution.
• Common mistake: Forgetting to place the carafe.
• Avoid it by: Double-checking that the carafe is properly seated before starting the brew cycle.

5. Run a brew cycle: Start a brew cycle as if you were making coffee. Let the machine run about halfway through the cycle.

• What “good” looks like: The ACV solution is heating and dripping into the carafe.
• Common mistake: Running a full cycle without interruption.
• Avoid it by: Stopping the cycle halfway to let the solution sit in the machine.

6. Let it sit: Turn off the coffee maker and let the ACV solution sit in the reservoir and internal components for at least 30-60 minutes.

• What “good” looks like: The ACV solution has time to break down mineral deposits and clean the internal parts.
• Common mistake: Not allowing sufficient dwell time.
• Avoid it by: Being patient; the sitting time is crucial for effective cleaning.

7. Complete the brew cycle: Turn the coffee maker back on and let the rest of the ACV solution brew through into the carafe.

• What “good” looks like: The entire cleaning solution has passed through the machine.
• Common mistake: Not finishing the brew cycle.
• Avoid it by: Ensuring the reservoir is empty after this step.

8. Discard the ACV solution: Pour the ACV solution from the carafe down the drain.

• What “good” looks like: The carafe is empty and ready for rinsing.
• Common mistake: Leaving the ACV solution in the carafe.
• Avoid it by: Disposing of the used cleaning solution immediately.

9. Rinse with fresh water (Cycle 1): Fill the water reservoir with clean, fresh water and run a full brew cycle.

• What “good” looks like: Pure water is brewing through the machine, rinsing out residual ACV.
• Common mistake: Skipping the rinsing step.
• Avoid it by: Understanding that rinsing is essential to remove ACV smell and taste.

10. Rinse with fresh water (Cycle 2): Repeat the rinsing process with another full brew cycle using only clean, fresh water.

• What “good” looks like: The machine is thoroughly rinsed, and there’s no lingering ACV odor or taste.
• Common mistake: Insufficient rinsing.
• Avoid it by: Running at least two full water-only cycles to be sure.

11. Clean the carafe and brew basket: Wash the carafe and brew basket thoroughly with soap and water.

• What “good” looks like: All components are clean and free of any ACV residue.
• Common mistake: Not washing the removable parts.
• Avoid it by: Handwashing these parts separately after the brewing cycles are complete.

Common Mistakes (and What Happens If You Ignore Them)

Mistake	What It Causes	Fix
Brewing ACV for drinking	Damage to internal heating elements, tubing, and plastic components due to acidity.	Do not brew ACV for drinking. Dilute ACV with water and drink it separately.
Using undiluted ACV for cleaning	Can be too harsh, potentially damaging seals or internal surfaces.	Always dilute ACV with water (typically 1:1 ratio) when using it to clean your coffee maker.
Not rinsing thoroughly after cleaning	Lingering ACV smell and taste in future coffee brews.	Run at least two full cycles of fresh water after cleaning with ACV.
Leaving ACV in the machine overnight	Prolonged exposure to acid can accelerate corrosion and damage.	Complete the cleaning process promptly; do not leave ACV solutions in the reservoir or internal components for extended periods.
Using ACV in single-serve pod machines	Can clog or damage the delicate piercing mechanisms and internal pathways.	Check your pod machine’s manual; most advise against using anything other than water for cleaning.
Using ACV in espresso machines	Highly acidic, can damage sensitive metal parts, seals, and boilers.	Espresso machines require specific descaling solutions. Consult your manual; never use ACV.
Not checking the manual first	Potentially voiding warranty or causing irreparable damage to the machine.	Always refer to your coffee maker’s user manual for approved cleaning methods and materials.
Ignoring ACV’s odor	ACV smell can permeate the machine and affect coffee flavor for a long time.	Be prepared for a strong smell during cleaning and ensure thorough rinsing.
Using ACV in machines with metal parts	Can cause corrosion or discoloration on certain metal components.	If your machine has significant exposed metal parts, consider a milder descaling solution or manufacturer-recommended cleaner.

Decision Rules

• If you want to brew a hot apple cider vinegar drink, then dilute ACV with hot water in a mug, because coffee makers are not designed for brewing acidic beverages.
• If your coffee maker’s manual explicitly mentions using vinegar for cleaning, then follow those specific instructions, because manufacturer guidance is always best.
• If you have a single-serve pod machine, then do not attempt to brew ACV through it, because the internal mechanisms are delicate and can be damaged by acidity.
• If you notice a metallic or bitter taste in your coffee after cleaning, then run an additional plain water cycle, because there might be residual cleaning solution.
• If you are experiencing significant mineral buildup (scale), then a diluted ACV solution can help, because ACV is an effective descaler.
• If you are unsure about your coffee maker’s material composition, then err on the side of caution and use a dedicated coffee maker descaler, because ACV can be too harsh for certain materials.
• If you want to sanitize your coffee maker, then a diluted ACV solution can be used for cleaning, because ACV has some mild disinfectant properties.
• If you have a French press or pour-over cone, then you can rinse them with diluted ACV if needed, because these are simpler systems less prone to internal damage.
• If you smell a strong vinegar odor after brewing coffee, then you likely need to run more plain water cycles, because the ACV was not fully rinsed out.
• If you want to clean your coffee maker, then a 1:1 ratio of ACV to water is a common starting point, because this dilution is generally effective without being overly aggressive.
• If your coffee maker has an automatic cleaning cycle, then check if it recommends vinegar or a specific descaling solution, because many machines are designed for specific cleaning agents.
• If you are brewing coffee and ACV at different times, then ensure the machine is thoroughly cleaned and rinsed between uses, because cross-contamination of flavor is highly likely.

FAQ

Can I drink apple cider vinegar brewed in my coffee maker?

No, it is strongly advised not to brew apple cider vinegar for drinking purposes in a coffee maker. The acidity can damage the internal components of the machine, and the taste and smell will likely linger, ruining future coffee brews.

Will apple cider vinegar clean my coffee maker?

Yes, a diluted solution of apple cider vinegar and water can be an effective way to clean and descale your coffee maker, removing mineral buildup. However, it’s crucial to follow the correct cleaning procedure and rinse thoroughly afterward.

How much apple cider vinegar should I use for cleaning?

For cleaning, a common recommendation is to use a solution of equal parts apple cider vinegar and water (1:1 ratio). Fill the water reservoir with this mixture, just as you would with water for a regular brew.

How long should I let the vinegar solution sit in the coffee maker?

After running about half of the vinegar solution through the brew cycle, turn off the machine and let it sit for at least 30 to 60 minutes. This allows the vinegar to work on breaking down mineral deposits inside the machine.

What happens if I don’t rinse my coffee maker thoroughly after using vinegar?

If you don’t rinse thoroughly, your coffee will likely taste and smell like vinegar. This lingering flavor can be very difficult to remove and may affect your coffee for many brews.

Can I use ACV to clean my Keurig or other single-serve coffee maker?

It’s generally not recommended to use apple cider vinegar in most single-serve coffee makers like Keurigs. These machines have delicate piercing mechanisms and internal tubing that can be damaged by acidic solutions. Always check your specific machine’s manual for cleaning instructions.

What are the risks of brewing ACV in a coffee maker?

The primary risks include permanent damage to the heating element, internal tubing, seals, and plastic components due to the high acidity of ACV. There’s also the risk of an unpleasant, persistent odor and taste in the machine.

Is there a better alternative to ACV for cleaning coffee makers?

Yes, many coffee maker manufacturers recommend using a dedicated descaling solution designed specifically for coffee machines. These are formulated to be effective at removing mineral buildup without damaging the machine’s components.

What This Page Does NOT Cover (and Where to Go Next)

• Detailed instructions for specific coffee maker models (e.g., Breville, Cuisinart, Mr. Coffee). Always consult your brewer’s manual.
• Recipes for drinking apple cider vinegar beverages.
• The specific chemical reactions that occur when ACV interacts with coffee maker materials.
• Advanced troubleshooting for complex coffee maker issues beyond basic cleaning.

Next Steps:

• Consult your coffee maker’s user manual for model-specific cleaning and descaling instructions.
• Explore recommended descaling solutions for your coffee maker type.
• Research popular methods for preparing and consuming apple cider vinegar drinks.