The power of mash filters: Unlocking efficiency to the last drop

If you’ve heard whispers in brewing circles about “mash filters” and wonder if they’re a mythical device or real magic, you’re in the right place.

Mash filters are not just real—they’re a game-changing brewing technology that’s revolutionizing how wort is extracted from grain. Imagine unlocking brewhouse efficiencies of 95% or more, all while gaining flexibility with different ingredients and maximizing every ounce of yield. With a mash filter, brewers can achieve these results, handling tricky adjuncts and high-gravity recipes with ease.

In this article, we’re diving deep into the world of mash filters. We’ll explore what makes them so powerful, break down how they work, and see how they stack up against other mash filtration technologies. Whether you’re a pro brewer or just curious about next-level brewing tech, you’ll find everything you need to know right here.

What is a mash filter?

A mash filter is an advanced brewing tool used to extract wort—the liquid that will eventually become beer—from the grain during mashing. Traditional systems like lauter tuns rely on gravity and a slotted false bottom to drain the wort, but a mash filter takes things to the next level. By applying pressure to the mash through a series of filter plates, a mash filter extracts nearly every drop of fermentable liquid, resulting in higher brewhouse efficiency, more consistent results, and the ability to handle adjuncts like oats, corn, and rice without clogging up the works.

Think of it as a supercharged lauter tun—a piece of equipment designed to get the job done faster, more efficiently, and with less sparging water.

How does a mash filter work?

Let’s break down how this high-tech mash filtration process works, step by step.

  1. Mashing in
    The brewing process starts like any other. The grain (also known as grist) is mixed with hot water to create a mash, converting starches into fermentable sugars. Once the mash rests, it’s pumped into the mash filter.
  2. Filling the filter plates
    Mash filters are made up of a series of plates covered with filter cloths, forming compartments (or cells). The mash fills these compartments, creating compact pockets of grain and wort. Each plate is tightly sealed to prevent leaks, ensuring a clean and consistent separation process.
  3. Applying pressure
    Now for the magic: once the mash is loaded into the filter plates, pressure is applied. This pressure forces the wort out of the grain and through the filter cloths, leaving a clear, concentrated wort while trapping the grain solids in each cell.
  4. Collecting the wort
    The wort is collected, crystal clear and ready to head to the boil kettle. Because of the pressure, the wort is free from grain particles, ensuring a cleaner taste and more efficient extraction of fermentable sugars.
  5. Removing spent grain
    Once filtration is complete, the mash filter opens, and the spent grain is removed. Thanks to the pressure applied, these grain cakes are drier and easier to handle than those left in a traditional lauter tun, making disposal or recycling more efficient.

Benefits of using a mash filter in brewing

So, why are mash filters gaining popularity among commercial brewers? Here’s a look at the top benefits that make them a game-changer in brewing.

1. Higher brewhouse efficiency

One of the biggest advantages of mash filters is that they dramatically boost brewhouse efficiency. Mash filters can reach up to 95% brewhouse efficiency, squeezing out every last drop of fermentable wort. This means more beer per batch, which is a big deal if you’re brewing commercially and want to maximize yield.

2. Reduced sparge water

Since mash filters use pressure rather than gravity, they don’t need as much water for sparging. This reduction in water usage results in more concentrated worts, which are ideal for brewing higher ABV beers or full-bodied brews without having to adjust recipes drastically.

3. Faster processing times

Lauter tuns can take hours to separate wort from grain, but mash filters do it in a fraction of the time. The pressure-based filtration system allows the process to run smoothly and quickly, saving valuable time and increasing productivity.

4. Greater ingredient flexibility

Want to use high-adjunct recipes with rice, corn, or oats? No problem! Mash filters handle adjuncts with ease, as they don’t depend on a stable grain bed to filter wort. This gives brewers the flexibility to experiment with unique ingredients and brew styles.

Mash filter vs. Lauter tun

So how does a mash filter stack up against a lauter tun in terms of brewhouse efficiency? Here’s a breakdown of why the mash filter typically has the edge:

Mash filter efficiency

  • Higher brewhouse efficiency: Mash filters often push brewhouse efficiency to around 95% or more. By using pressure to squeeze every bit of liquid from the grain, they extract nearly all the fermentable sugars, maximizing each batch’s yield.
  • Reduced sparge water: Because mash filters don’t rely on gravity and don’t require a lot of water for extraction, they produce more concentrated wort with less water. This can lead to a higher initial gravity, which is ideal for brewing stronger or more complex beers with bolder flavors.
  • Faster processing time: With no need to wait for the grain bed to settle, mash filters can drastically cut down mashing and lautering time, often completing a cycle in half the time (or even less) compared to a lauter tun. For high-volume breweries, this speed can mean significant production gains.
  • Better adjunct handling: Unlike lauter tuns, mash filters handle adjuncts like rice, corn, and oats effortlessly. Brewers can include high levels of adjuncts without worrying about clogging or slowing down the process, making them a great tool for crafting unique or high-adjunct recipes.

Lauter Tun Efficiency

  • Moderate brewhouse efficiency: Traditional lauter tuns usually achieve brewhouse efficiencies between 65% and 90%. This is because they rely on gravity and the grain bed’s filtration properties, which limits how much wort can be extracted without compacting the bed and causing channeling (uneven flow).
  • Increased water usage: Lauter tuns require more sparge water to rinse sugars from the grain bed. While effective for producing clear wort, it dilutes the extract, which may mean longer boil times or additional equipment if aiming for high gravity.
  • Slower process: Lauter tuns are slower to run because they rely on a gentle flow, allowing the wort to slowly pass through the grain bed. This process can take hours, particularly with thick or adjunct-heavy mashes, leading to longer brewing sessions and less production output.
  • Potential clogging with adjuncts: With a lauter tun, high adjuncts (such as corn or rice) can cause the grain bed to clog, risking a stuck mash. To avoid this, many brewers stick to straightforward malt bills or only moderate adjunct use.

Top companies producing mash filters

If you're looking to enhance your brewhouse with a top-performing mash filter, several industry leaders specialize in high-efficiency, advanced filtration technology. Here’s a closer look at some of the top companies that are paving the way in mash filtration:

Meura

Founded in 1845, Meura has become an iconic name in brewing equipment, especially known for its innovation in mash filtration technology. Their signature product, the Meura 2001 Hybrid mash filter, is recognized across the brewing industry for its impressive extract yield, high efficiency, and versatility. This advanced filter can handle a wide range of ingredients and mash profiles, including those with high adjunct levels. Meura’s mash filter design reduces water usage and shortens production times, making it a popular choice for breweries focused on sustainability and high production output. Meura’s commitment to precision and efficiency has made it a go-to brand for commercial and craft breweries around the world.

Ziemann Holvrieka

Ziemann Holvrieka is another big player in the brewing equipment world, renowned for its advanced mash filtration systems that deliver consistent, high-quality results. Their standout products, the Dragonfly chamber mash filter and Butterfly membrane mash filter, are engineered to handle the demands of high-volume brewing. These filters incorporate state-of-the-art technology to maximize wort clarity, minimize losses, and optimize brewhouse efficiency. Ziemann Holvrieka focuses on reliability and innovation, crafting mash filters that adapt well to unique grain bills and high-adjunct recipes, all while enhancing the overall quality of the wort. With Ziemann’s solutions, brewers gain not only efficiency but also operational flexibility, allowing for more creativity in recipe development.

Steinecker (a subsidiary of Krones)

Steinecker, as part of the globally recognized Krones Group, is known for its high-tech brewing solutions that push the boundaries of traditional brewing processes. Steinecker's mash filters are designed with an emphasis on high throughput, sustainability, and quality, making them suitable for large-scale breweries aiming to optimize production. The mash filters offered by Steinecker are engineered to provide maximum efficiency while maintaining energy efficiency and reducing water consumption, aligning with today’s sustainability standards. Their equipment supports a wide range of brewing styles, from lagers to high-adjunct ales, allowing breweries to experiment with complex recipes without sacrificing efficiency or clarity. Steinecker’s focus on eco-friendly solutions helps breweries meet the increasing consumer demand for sustainable products.

Talleres Landaluce

With over 40 years in the brewing equipment industry, Talleres Landaluce has become a trusted name in mash filtration, known for creating mash filters that blend efficiency with cutting-edge technology. Talleres Landaluce’s mash filters are designed to optimize wort extraction while reducing energy and water usage, appealing to both large breweries and mid-sized operations. The company’s emphasis on durable, user-friendly designs ensures that brewers can achieve high brewhouse efficiency without the need for excessive maintenance. Talleres Landaluce’s expertise in engineering has led to innovations that allow brewers to work with diverse grain bills, including recipes with challenging adjuncts, which require more robust and adaptable equipment.

Is a mash filter right for your brewery?

Mash filters offer impressive efficiency and flexibility, making them a go-to choice for some breweries, but they’re not always the perfect fit for every setup. Here’s a more detailed breakdown to help you decide if investing in a mash filter aligns with your brewing goals, resources, and production scale.

Large-scale & commercial breweries

If you’re brewing at a commercial scale, a mash filter could be a game-changer. Its ability to handle high-adjunct recipes with ease—think grains like rice, corn, and oats—makes it ideal for breweries looking to push creative boundaries or diversify their offerings. The higher brewhouse efficiency (often hitting 95% or more) means more beer per batch, which translates to greater profitability and a quicker return on investment. Plus, mash filters can significantly cut down on mashing and lautering time, allowing for faster turnaround and higher production capacity. This efficiency and speed are critical advantages for larger breweries aiming to meet high demand, reduce waste, and optimize each production run.

In addition, the decreased water usage in mash filters allows breweries to produce concentrated, high-gravity worts without excessive sparging. This not only saves water and energy costs but also contributes to a more sustainable brewing process—a factor that’s becoming increasingly important to breweries of all sizes. If your brewery is ready to scale up or expand into more innovative recipes, a mash filter is well worth considering.

Medium to small-sized breweries

For medium-sized breweries, the decision to invest in a mash filter comes down to balancing cost with production goals. If your brewery is steadily growing and looking to increase batch sizes, boost efficiency, or experiment with complex recipes, a mash filter could be a strategic investment. Many mid-sized breweries find that while the upfront cost is significant, the savings in water usage, faster processing times, and ability to handle diverse ingredients offer long-term benefits that justify the purchase.

However, it’s also important to consider that mash filters are more complex and may require additional staff training and maintenance compared to a lauter tun. Assessing the overall impact on your production workflow, staffing, and long-term growth goals will help clarify whether a mash filter is the right move as you scale up.

The future of mash filtration

While mash filters currently reign supreme in brewhouse efficiency, brewing technology is ever-evolving, and new innovations are on the horizon. Techniques like continuous mashing, hydrostatic pressure mashing, and membrane filtration are showing real promise as potential rivals, each bringing unique efficiencies and versatility. Yet, for now, the mash filter remains the top choice for brewers who want to maximize yield, streamline batch times, and experiment with diverse grain bills without sacrificing consistency.

Whether you’re crafting hop-forward IPAs, bold high-gravity stouts, or clean, crisp lagers, a mash filter provides reliability and exceptional efficiency that’s tough to beat. As the brewing industry continues to innovate, alternative filtration methods may gain traction, but for now, the mash filter offers an unmatched blend of speed, flexibility, and quality. It’s a tool that empowers brewers to push the boundaries of flavor and efficiency, making it a staple in the toolkit of modern brewhouses.