In this article, you’ll learn:
- What to look for in the best coffee maker for cold brew
- Why speed and efficiency are critical for commercial cold brew production
- How hygiene risks in cold brew are best managed with modern equipment
Cold brew coffee has grown steadily in both popularity and demand, and businesses are capitalising on this by investing in equipment that allows them to scale production, respond to orders quickly, and meet consumers’ evolving expectations.
Preparing cold brew typically begins with steeping coffee grounds, after which it is filtered and then served or stored. With traditional equipment, this can take up to 24 hours, and challenges around safety, speed, and efficiency remain. Modern equipment provides a far better experience – but only when you choose the right cold brew coffee maker.
To better understand how to choose the best coffee maker for cold brew, I spoke to Ben Irvine, Head of Trade Marketing at Seven Miles Coffee Roasters. Read on for his insights.
What to look for in the best coffee maker for cold brew
The best coffee maker for cold brew starts with three practical considerations: volume, space, and budget, Ben explains.
A typical coffee shop serves between 100 and 600 customers daily, so capacity matters from the outset. The bigger limitation with traditional immersion is that you can only brew up to its set capacity – once a batch is gone, there is nothing to recover mid-service.
Modern systems, such as Hardtank’s Baby Hardtank or Hardtank 20, can brew fresh cold brew in under an hour and yield 45% more from the same amount of coffee, directly reducing costs and increasing profit margins.
Ben advises keeping three factors in mind: capacity, ease of cleaning, and durability. Equipment that is hard to clean quickly becomes a hygiene problem. Visibility also matters: compact, countertop-friendly units like the Hardtank’s Hardtap integrate into a café’s workflow and remain visible to customers.
“Customers buy what they can see,” Ben says. “If cold brew isn’t visible, it won’t sell as well as it should.”
Beyond visibility, the return on your investment depends on how well your equipment fits into the day-to-day workflow for your business. Much of this comes down to efficiency, including the ability to integrate with other beverage preparation systems, whether those are espresso machines, milk frothers, or dispensers for serving your cold and iced drinks, such as the Hardtap atmospheric nitrogen dispenser.
How important are speed and efficiency?
Speed and efficiency are critical for any coffee machine for cold brew because demand spikes are unpredictable, and running out mid-service is costly.
Traditional cold brew requires steeping for 12 to 24 hours overnight, which works well in routine conditions. But sporadic demand – an unusually hot day, a local event, a viral trend – can quickly exhaust a batch.
“You can run out by midday, and there’s simply nothing you can do about it until tomorrow,” Ben explains.
More than two-thirds of global consumers expect products that make their lives easier. Turning them away or making them wait sends the wrong message, affecting loyalty and sales.
The Baby Hardtank and Hardtank 20 address this using patented dynamic recirculation technology. Cold water is actively circulated through the coffee grounds, cutting extraction time to under an hour whilst maintaining consistent flavour. The Baby Hardtank produces up to 4 litres per batch, suited to smaller operations. Hardtank 20, meanwhile, scales up to 20 litres per batch and up to 250 litres per day – anywhere from 300 to 1,250 servings depending on portion size.
Ben adds that a faster coffee machine for cold brew addresses many of the operational challenges businesses face when using older equipment. ”Technology that shortens brew time addresses the root problem in a way that smarter scheduling simply can’t.” That includes the flexibility to meet spikes in demand, as well.
Ultimately, the time and staff resources that you save on production can be better spent elsewhere – marketing, customer service, and other crucial business functions.
Why the best coffee maker for cold brew focuses on hygiene
Hygiene is non-negotiable – and the best cold brew coffee maker makes it impossible to overlook.
Because cold brew uses lower-temperature water, pathogens are more likely to reproduce. A 2023 Hard Beans study found that bacteria such as E. coli can develop at room temperature in under 24 hours, with entry points ranging from the coffee beans themselves to equipment and the surrounding environment.
“Traditional cold brew is typically brewed at room temperature and then stored, without any real measurement of bacterial growth”, Ben explains.
While keeping cold brew at or below 5°C (41°F) is generally enough to limit microbial activity, Ben points out that these controls have not been standardised across the industry.
“The challenge is that ‘sensible’ isn’t always well-defined, and in a busy café environment, standards can slip,” he explains.
That’s precisely why the best cold brew coffee makers don’t leave hygiene to human intervention. Hardtank cold brew systems feature self-cleaning and sanitation programmes, as well as food-safe stainless steel materials that limit exposure at multiple handling points. Additionally, by brewing smaller volumes more frequently, you reduce the amount of time they’re exposed to potential contaminants – further addressing concerns about unwanted microbial growth.
“Newer brewing systems that brew and store within a single sealed vessel reduce some of this risk by limiting exposure at multiple handling points.” Ben says. “That’s a meaningful advantage, not just operationally but from a food safety standpoint.”
The ideal coffee maker for cold brew combines speed, efficiency, safety, versatility, and scalability. Baby Hardtank, Hardtank 20, and Hardtap are all built to deliver on each of these fronts – producing and dispensing consistent, quality cold brew with minimal human intervention.
Best coffee maker for cold brew: Key takeaways
- Volume, space, and budget determine which cold brew coffee maker is right for your business – but speed and workflow integration are just as important.
- Traditional immersion systems don’t let you refresh midway through service. However, modern coffee makers for cold brew use recirculation technology to brew in under an hour, allowing you to respond to spikes in demand.
- Cold brew is made with room temperature water, which means pathogens are not killed off during brewing. Research shows that bacteria such as E. coli can develop at room temperature in under 24 hours, making sealed vessels and built-in sanitation cycles essential for any cold brew coffee maker used in a commercial setting.
Looking to improve your cold brew production setup? Explore Hardtank’s cold brew systems or get in touch with the team to find the right solution for your workflow and volume.
Best coffee maker for cold brew: FAQs
What should I look for in a coffee maker for cold brew?
Start with volume, space, and budget. From there, prioritise brew speed, ease of cleaning, and durability. For cafés that need to stay ahead of demand, systems like the Baby Hardtank or Hardtank 20 can brew a fresh batch in under an hour, so you are never caught short mid-service.
How does a modern cold brew coffee maker improve efficiency?
Traditional immersion systems steep for 12 to 24 hours, leaving businesses unable to respond to sudden spikes in demand. Modern coffee machines for cold brew, such as the Baby Hardtank and Hardtank 20, use dynamic recirculation technology to cut that down to under an hour. They can produce up to 50-250 litres per day, freeing up staff time for other areas of the business.
Why does hygiene matter so much with cold brew equipment?
Cold brew is made with room temperature water, which means pathogens are not killed off during brewing. Research shows that bacteria such as E. coli can develop at room temperature in under 24 hours. A cold brew coffee maker with built-in sanitation cycles, sealed vessels, and food-safe materials significantly reduces this risk.
Want to learn more about our cold brew systems?
- Choose your equipment: Browse our range of cold brew machines.
- Speak to a specialist: Contact the Hardtank team.
- Watch our latest webinar: Cold Brew for Cafes Pricing, Margins & ROI.
