Brewing Small Batches with a Bonavita Coffee Maker

Quick answer

• Yes, you can brew small batches with your Bonavita coffee maker, though it’s optimized for larger volumes.
• For best results with smaller amounts, aim for at least 20 oz (approximately 3 cups) of brewed coffee.
• Using the correct coffee-to-water ratio is crucial, even for small batches.
• Ensure your coffee grounds are the right size for your chosen brewing method.
• A clean machine and good quality water will always improve your brew, regardless of batch size.
• Experiment with slight adjustments to coffee amount and brew time if brewing below the optimal range.

Who this is for

• Coffee drinkers who prefer a single cup or a small pot but own a Bonavita coffee maker designed for larger brews.
• Individuals looking to understand how to get the best flavor from their Bonavita when not brewing a full carafe.
• Home baristas who want to optimize their brewing process for personal enjoyment, even with smaller quantities.

What to check first

Brewer type and filter type

Your Bonavita coffee maker likely uses a specific filter basket. Most Bonavita models are designed for standard basket-style paper filters or have a reusable metal filter. Ensure you are using the correct filter type for your machine to prevent grounds from entering your coffee. Using the wrong filter can lead to under-extraction or over-extraction, impacting taste.

Water quality and temperature

The quality of your water significantly affects the taste of your coffee. If your tap water has a strong taste or odor, consider using filtered water. Bonavita coffee makers are designed to heat water to an optimal brewing temperature, typically between 195°F and 205°F. Ensure your machine is functioning correctly and reaching this temperature range.

Grind size and coffee freshness

The size of your coffee grounds is critical. For most drip coffee makers like the Bonavita, a medium grind is recommended. If your coffee tastes weak or sour, your grind might be too coarse. If it tastes bitter or burnt, it might be too fine. Freshly ground coffee beans offer the best flavor. Aim to grind your beans just before brewing.

Coffee-to-water ratio

This is perhaps the most important factor for any brew size. A common starting point is the “golden ratio” of 1:15 to 1:18 coffee to water by weight. For example, for 20 oz (about 2.5 cups) of brewed coffee, you might use around 30-35 grams of coffee. Using too little coffee will result in a weak brew, while too much can lead to over-extraction and bitterness.

Cleanliness/descale status

A clean coffee maker is essential for good-tasting coffee. Coffee oils can build up over time and impart a stale or bitter flavor. Regularly clean your Bonavita’s brew basket and carafe. If you notice slower brewing times or mineral buildup, it’s time to descale your machine. Mineral deposits can affect water temperature and flow, impacting extraction. Check your manual for specific cleaning and descaling instructions.

Step-by-step (brew workflow)

1. Gather your supplies: Have your Bonavita coffee maker, fresh coffee beans, a grinder, filtered water, and your chosen filter ready.

• What “good” looks like: Everything is within easy reach and clean.
• Common mistake: Forgetting to turn on the coffee grinder or not having enough beans.
• Avoid it by: Doing a quick mental checklist before you start.

2. Measure your water: Determine how much coffee you want to brew and measure the corresponding amount of filtered water. For small batches, aim for at least 20 oz.

• What “good” looks like: The water level in the reservoir is clearly visible and matches your intended brew amount.
• Common mistake: Overfilling the water reservoir, which can lead to overflow during brewing.
• Avoid it by: Measuring water into the carafe first, then pouring it into the reservoir, or by carefully observing the fill lines.

3. Grind your coffee beans: Weigh your coffee beans based on your desired ratio and grind them to a medium consistency.

• What “good” looks like: Uniformly sized grounds with no fine dust or large chunks.
• Common mistake: Grinding too fine, which can clog the filter and lead to bitter coffee.
• Avoid it by: Using a burr grinder and experimenting with settings until you achieve the right consistency.

4. Prepare the filter: Place a paper filter into the brew basket, or ensure your reusable filter is clean and in place. If using a paper filter, rinse it with hot water to remove any papery taste.

• What “good” looks like: The filter is seated snugly in the basket without gaps.
• Common mistake: Not rinsing the paper filter, leading to a papery taste in your coffee.
• Avoid it by: Always rinsing paper filters with hot water before adding coffee grounds.

5. Add coffee grounds: Carefully transfer the freshly ground coffee into the prepared filter. Gently shake the basket to level the grounds.

• What “good” looks like: The coffee bed is relatively flat and even, with no grounds clinging to the rim of the basket.
• Common mistake: Leaving grounds on the rim of the basket, which can lead to uneven saturation and channeling.
• Avoid it by: Tapping the basket lightly or using a gentle finger sweep to clear the rim.

6. Insert the brew basket: Place the brew basket securely into its designated spot in the coffee maker.

• What “good” looks like: The basket clicks or sits firmly in place.
• Common mistake: Not seating the brew basket properly, which can cause water to bypass the grounds or spill.
• Avoid it by: Ensuring it’s fully engaged before proceeding.

7. Place the carafe: Position the carafe under the brew basket. Ensure it’s aligned correctly.

• What “good” looks like: The carafe sits flush against the brew basket drip-stop mechanism (if applicable).
• Common mistake: Not placing the carafe correctly, preventing the brew cycle from starting or causing spills.
• Avoid it by: Making sure the carafe is pushed in fully.

8. Start the brew cycle: Turn on your Bonavita coffee maker. The machine will heat the water and begin dripping it over the coffee grounds.

• What “good” looks like: Water begins to evenly saturate the coffee grounds, and coffee starts to drip into the carafe.
• Common mistake: Forgetting to press the start button or assuming the machine will turn on automatically.
• Avoid it by: Double-checking that the power button has been activated.

9. Monitor the bloom (optional but recommended): For the first 30 seconds to a minute, the hot water will cause the coffee grounds to expand and release CO2. This is the “bloom.”

• What “good” looks like: The grounds puff up and bubble gently.
• Common mistake: Not allowing for the bloom, which can lead to a less flavorful cup.
• Avoid it by: Ensuring the machine’s pre-infusion or initial water dispersion is adequate.

10. Allow the brew to complete: Let the coffee maker finish its entire brew cycle. Avoid removing the carafe prematurely.

• What “good” looks like: The brewing process finishes, and the machine may beep or indicate completion.
• Common mistake: Pulling the carafe out too early, stopping the brew and resulting in weak coffee.
• Avoid it by: Waiting until the dripping stops completely.

11. Serve and enjoy: Once brewing is complete, remove the carafe and pour your fresh coffee.

• What “good” looks like: Aromatic, hot coffee filling your cup.
• Common mistake: Letting coffee sit on the warming plate for too long, which can make it taste burnt.
• Avoid it by: Drinking your coffee soon after brewing or transferring it to a thermal carafe.

12. Clean up: Discard the used coffee grounds and filter, and rinse the brew basket and carafe.

• What “good” looks like: All brewing components are clean and ready for the next use.
• Common mistake: Leaving used grounds in the basket, which can cause mold and odor.
• Avoid it by: Making cleanup a routine part of your brewing process.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using stale coffee beans	Flat, dull, or bitter coffee flavor; lack of aroma.	Use freshly roasted beans and grind them just before brewing.
Incorrect grind size (too fine)	Bitter, over-extracted coffee; slow or clogged brew.	Adjust grinder to a coarser setting; aim for medium grind.
Incorrect grind size (too coarse)	Weak, sour, or watery coffee; under-extracted flavor.	Adjust grinder to a finer setting; aim for medium grind.
Using tap water with strong flavors/minerals	Off-flavors in the coffee; potential buildup in the machine.	Use filtered or bottled water.
Not rinsing paper filters	Papery or cardboard-like taste in the coffee.	Rinse paper filters thoroughly with hot water before adding grounds.
Not cleaning the coffee maker regularly	Stale, bitter, or rancid coffee taste; potential for mold or bacteria.	Clean brew basket and carafe after each use; descale as recommended by the manufacturer.
Incorrect coffee-to-water ratio (too little coffee)	Weak, watery, under-extracted coffee.	Increase the amount of coffee grounds or decrease the amount of water.
Incorrect coffee-to-water ratio (too much coffee)	Bitter, strong, over-extracted coffee; potential for grounds in the cup.	Decrease the amount of coffee grounds or increase the amount of water.
Removing carafe too early	Incomplete brew cycle; weak and watery coffee.	Wait for the brew cycle to finish completely before removing the carafe.
Brewing too small a batch (e.g., <10 oz)	Uneven saturation of grounds; potential for weak or inconsistent extraction.	Aim for at least 20 oz with your Bonavita, or consider a smaller brewing device for very small amounts.

Decision rules (simple if/then)

• If your coffee tastes bitter, then check your grind size and make it coarser because a fine grind can lead to over-extraction.
• If your coffee tastes weak and sour, then check your grind size and make it finer because a coarse grind can lead to under-extraction.
• If your coffee tastes like paper, then ensure you are rinsing your paper filter with hot water before adding grounds because this removes papery residue.
• If you notice mineral buildup in your Bonavita, then descale the machine according to the manufacturer’s instructions because mineral deposits affect performance and taste.
• If your brewed coffee has an unpleasant, stale flavor, then clean your brew basket and carafe thoroughly because coffee oils can go rancid.
• If you are brewing less than 20 oz, then consider slightly increasing the coffee-to-water ratio because smaller batches can be harder to extract evenly.
• If your Bonavita is brewing very slowly, then it likely needs descaling because mineral buildup restricts water flow.
• If you want to improve the clarity of your coffee’s flavor, then use filtered water because tap water can introduce unwanted tastes.
• If your coffee tastes “off” but you’ve tried adjusting the grind, then check the freshness of your coffee beans because old beans lose their aromatic compounds.
• If your Bonavita is not heating water properly, then consult your user manual or contact customer support because this indicates a potential malfunction.
• If you are consistently dissatisfied with small batch brewing on your Bonavita, then consider investing in a smaller, single-serve brewer because some machines are better suited for specific batch sizes.

FAQ

Can I make just one cup of coffee with my Bonavita?

While you can technically brew a very small amount, Bonavita machines are optimized for larger volumes. For best results and flavor extraction, aim for at least 20 oz (about 3 cups) of brewed coffee. Brewing significantly less may lead to inconsistent results.

What is the best coffee-to-water ratio for small batches?

A good starting point is the “golden ratio” of 1:15 to 1:18 (coffee to water by weight). For example, if you aim for 20 oz (approximately 295 ml or grams) of brewed coffee, use about 20-25 grams of coffee beans. Adjust to your taste.

My Bonavita brews very slowly when making a small pot. What’s wrong?

This could be due to mineral buildup from hard water, requiring descaling. It could also happen if the grind is too fine, clogging the filter. Ensure your machine is clean and descale it if necessary, and check your grind size.

How do I prevent my coffee from tasting weak when brewing a small amount?

Ensure you are using enough coffee grounds for the amount of water. Using a slightly higher ratio (e.g., 1:15 instead of 1:18) for smaller batches can help. Also, make sure your grind size is appropriate and your coffee is fresh.

Is it okay to use a reusable metal filter with small batches?

Yes, a reusable metal filter can be used for small batches. However, metal filters allow more oils and fine particles to pass through, which can result in a fuller-bodied cup. If you prefer a cleaner cup, a paper filter might be better.

What if my Bonavita doesn’t have a small batch setting?

Most Bonavita models do not have specific small-batch settings. You achieve small batches by simply using less water and coffee. The key is to maintain the correct coffee-to-water ratio and ensure the water saturates the grounds effectively.

What this page does NOT cover (and where to go next)

• Specific troubleshooting for error codes or electronic malfunctions (consult your user manual).
• Advanced brewing techniques like pour-over or Aeropress (explore dedicated guides for those methods).
• Detailed comparisons of different coffee bean origins or roast profiles (research coffee tasting notes and origins).
• Maintenance schedules beyond basic cleaning and descaling (refer to your Bonavita manual for specific recommendations).