Have you ever wished for a lager that could be brewed quickly, without the hassle of long conditioning times or the notorious sulfur aroma, yet still deliver that crisp, clean character? For many homebrewers, the prospect of crafting a traditional lager often brings to mind weeks of patient waiting, precise temperature control, and the dread of off-flavors. However, as demonstrated in the video above, a groundbreaking innovation from Lallemand is changing the game: Novalager yeast.
Unlocking the Potential of Novalager Yeast: A New Era for Lagers
The journey to a perfect lager has historically been fraught with challenges. Traditional lager yeasts, often strains of Saccharomyces pastorianus, are known for their requirement of cool fermentation temperatures and extended conditioning periods. These conditions are typically necessitated to minimize the production of unwanted esters and fusel alcohols, as well as to allow for the natural scrubbing of sulfur compounds (H2S) and the reduction of diacetyl – a buttery off-flavor. This often means tying up fermentation vessels for weeks, if not months, a significant commitment for any brewer.
1. **Addressing Traditional Pain Points:** The primary pain points associated with brewing classic lagers include their slow fermentation rates and the prevalent production of sulfur, often described as a “rotten egg” smell. Conventional lager yeasts, such as the well-regarded 3470, while capable of producing clean beers, frequently necessitate stricter temperature management and longer timelines to achieve optimal flavor profiles. Furthermore, some ‘fast lager’ or ‘California lager’ yeasts, while accelerating the process, may compromise the authentic crispness and dryness that define the style.
2. **Introducing a Hybrid Solution:** This is where Novalager yeast makes a compelling entry. It is presented as a true bottom-fermenting hybrid lager yeast. Unlike genetically modified organisms, this yeast achieves its unique properties through natural hybridization. A key advantage is its remarkably wide temperature tolerance, thriving anywhere from 10 to 20 degrees Celsius. This expanded range allows brewers significantly more flexibility in their fermentation environment, potentially reducing the need for costly and complex temperature control setups.
The Science Behind Novalager: Hybrid Vigor for Faster, Cleaner Brews
The concept of a hybrid yeast brings together the best attributes of different strains. Imagine if a powerful sprint runner could also endure a marathon with ease; that is akin to what Novalager promises. The Lallemand promotional material highlights its ability to ferment exceptionally quickly—faster than many typical lager strains, and even surpassing the speed of some ale strains. Yet, this accelerated fermentation does not come at the expense of flavor integrity.
- **Eliminating Sulfur Production:** One of the most remarkable claims is Novalager’s inability to produce H2S, or hydrogen sulfide. This means brewers can bypass the often-dreaded sulfur notes that demand extensive conditioning and aging in traditional lagers. The absence of this compound significantly shortens the time from brew day to pint glass.
- **Minimizing Diacetyl:** Beyond sulfur, Novalager yeast also boasts extremely low diacetyl production. Diacetyl, a common byproduct of fermentation, can impart a buttery or butterscotch flavor if not properly managed. Traditional lagers require a “diacetyl rest,” a period of warmer fermentation near the end, to allow the yeast to reabsorb and process these compounds. With Novalager, this rest is effectively rendered unnecessary, further streamlining the brewing process.
- **Accelerated Fermentation at Moderate Temperatures:** The video explicitly illustrates Novalager’s speed, showcasing a beer fermented at 12 degrees Celsius that finished significantly faster than comparative Diamond or Nottingham strains. This is a crucial point, as it demonstrates the yeast’s efficiency even at temperatures that would typically slow down other lager yeasts. Consequently, the brewing schedule can be drastically compressed, allowing brewers to enjoy their lagers in a fraction of the usual time.
Brewing a New Zealand Style IPL with Novalager: A Practical Application
To put Novalager yeast to the test, an intriguing New Zealand style India Pale Lager (IPL) was brewed. This style, characterized by its crisp lager base infused with the vibrant aromatics of New Zealand hops, serves as an excellent canvas to evaluate the yeast’s performance. The detailed recipe and process outlined provide a robust case study for homebrewers.
1. **The Grain Bill Foundation:** A simple yet effective grain bill was chosen to highlight the yeast and hop characteristics without overwhelming complexity. The base consisted of Joe White Signature Ale Malt, renowned for its clean profile. To this, 500 grams of Munich malt were added, contributing a subtle depth and bready richness. Additionally, 500 grams of oats were incorporated, likely to enhance mouthfeel and promote head retention, without impacting the overall crispness.
2. **Mash Schedule and Water Chemistry:** The mash was conducted at 65 degrees Celsius (149 degrees Fahrenheit) for 75 minutes. This temperature typically promotes a good balance of fermentable sugars and unfermentable dextrins, leading to a beer with both dryness and body. A mash out at 76 degrees Celsius for 10 minutes followed, effectively halting enzymatic activity and preparing the wort for sparging. Water chemistry was adjusted with 2 ml of lactic acid and approximately 4 grams each of Epsom salt, calcium chloride, and gypsum. These salts play a vital role in enhancing malt flavors, hop bitterness, and yeast performance, ensuring a balanced mineral profile for the brew.
Hop Selection: Showcasing Zamba Hops
The hop schedule was designed to showcase Zamba hops, a varietal known for its tropical, citrus, and slightly piney notes, complementing the “New Zealand style” brief. The strategy involved multiple additions to layer hop character:
- **Bittering Addition:** 25 grams of Select Spalt hops were added at 60 minutes for a clean, classic bitterness.
- **Flavor and Aroma:** 25 grams of Zamba hops were introduced at 1 minute, providing a burst of late-kettle aroma.
- **Hop Stand:** A substantial hop stand was performed with 25 grams of Zamba at 95 degrees Celsius for 20 minutes. This technique is often employed to extract significant hop oils for aroma and flavor without contributing excessive bitterness.
- **Dry Hopping:** To maximize aromatic intensity, a significant dry hop addition of 50 grams of Zamba was planned for after fermentation, further enhancing the beer’s fragrant profile.
This progressive hop schedule, moving from bittering to late additions and then to dry hopping, is a common strategy in modern hoppy beers to build a complex and layered hop character. The quantity of 20 grams of Novalager yeast was pitched into a 6-gallon (approx. 22.7-liter) batch, which is considered a conservative amount, yet proved effective.
Mastering Fermentation: Temperature, Pressure, and Performance
The true test of Novalager yeast lies in its fermentation performance. The video meticulously details the conditions under which this lager was created, showcasing how modern brewing tools and techniques can synergize with an advanced yeast strain to produce exceptional results.
1. **Initial Gravity and Pitching:** The brew achieved an original gravity (OG) of 1.053, slightly above the target of 1.050, indicating a rich, fermentable wort. After no-chilling the wort in a cube, the 20-gram sachet of Novalager yeast was pitched the following day. This practice allows for a more controlled pitching temperature and minimizes hot-side aeration.
2. **Pressure Fermenting with Advanced Monitoring:** The fermentation was conducted under pressure using a spunding valve set to approximately 5 PSI. Pressure fermentation is a technique often utilized by homebrewers to reduce ester production, accelerate conditioning, and retain CO2. Monitoring was achieved via a RAPT Pill, an in-fermenter hydrometer and thermometer, providing real-time data on gravity and temperature. The setup initially ran at 15 degrees Celsius, allowing the yeast to become active, before being adjusted to 14 degrees Celsius to facilitate a clean lager profile without shocking the yeast.
3. **Rapid Gravity Drop and Temperature Bump:** The speed of Novalager yeast was quickly apparent. Pitched on the evening of October 18th, the gravity plummeted from 1.053 to 1.025 by October 20th – a significant drop of 28 points in just two days. This rapid activity prompted a temperature increase, or “bump,” to 16 degrees Celsius. This strategic warming, often applied when fermentation is nearing completion, assists the yeast in fully attenuating the beer and cleaning up any remaining diacetyl. Consequently, final gravity was reached by October 22nd, meaning the beer went from pitching to full fermentation in an astonishing four days.
Beyond the Brew Day: Dry Hopping and Crash Chilling
The post-fermentation stages are crucial for refining the beer’s character, particularly for an IPL where hop aroma is paramount and clarity is desired. The efficient fermentation timeline provided by Novalager yeast also positively impacts these subsequent steps.
1. **Dry Hopping at Final Gravity:** Once the beer reached final gravity in a conical fermenter, it was dry-hopped with 50 grams of Zamba. Dry hopping at final gravity allows the hops to infuse their aromatic compounds into the beer without the risk of fermentation activity scrubbing away delicate hop oils. The cold garage environment during this phase also helped maintain the beer’s quality.
2. **Accelerated Crash Chilling:** After a few days of dry hopping, the beer was crash chilled in the fermenting fridge. Crash chilling rapidly drops the beer’s temperature, causing yeast and hop particulate matter to fall out of suspension, leading to a clearer beer. The overall process, from pitching the Novalager yeast to reaching final gravity and preparing for conditioning, was completed in under a week. This rapid turnaround time is almost unheard of for a clean, traditional-tasting lager, showcasing the immense potential of Novalager for brewers seeking efficiency without compromise. The resulting beer exhibited a characteristic lager crispness and dryness, devoid of any sulfur or off-flavors, demonstrating that speed does not equate to a sacrifice in quality when Novalager is utilized.
Pouring Over NOVALAGER Yeast: Your Questions on the Next Big Brew
What is Novalager yeast?
Novalager yeast is an innovative hybrid lager yeast developed by Lallemand that allows brewers to make clean, crisp lagers much faster than traditional methods.
How is Novalager yeast different from traditional lager yeasts?
Traditional lager yeasts often require cool temperatures and long conditioning times, but Novalager ferments quickly and avoids common off-flavors like sulfur and diacetyl without extra steps.
What are the main benefits of using Novalager yeast for homebrewers?
Homebrewers can produce lagers in a fraction of the usual time, often in just days, with less worry about strict temperature control and without the hassle of sulfur or diacetyl rests.
Does Novalager yeast produce sulfur or diacetyl?
No, a key feature of Novalager yeast is its inability to produce hydrogen sulfide (sulfur) and its extremely low diacetyl production, ensuring a clean flavor profile.
