Slovak Brewer Peter Demko’s Liquid Positive Launches Hop Water and Isotonic Sports Drink

Slovak Brewer Creates Sugar-Free Hop Lemonades and Isotonic Sports Drink

Peter Demko, an award-winning Slovak brewer and co-founder of the Žiwell brewery, has taken hops out of the beer glass and into a completely new category of non-alcoholic, sugar-free beverages. Together with investor Tomáš Polerecký and a small team, he created Liquid Positive – a line of hop-based lemonades and, more recently, an isotonic sports drink. The brand targets active, health-conscious consumers who want the complex bitterness and aroma of hops without alcohol, sugar, or artificial additives.

Demko’s pivot reflects a broader societal shift: alcohol consumption is declining, especially among younger generations, while demand for functional, low-sugar drinks is rising. “After one beer or a glass of wine it’s different than when we were 20,” Demko says. “We wanted a drink you can enjoy after work, during sport or at dinner – without the consequences of alcohol and without unnecessary sugar.” The result is a hop lemonade made from just water, hop extract and 100% fruit juice, and an isotonic variant built on the same clean foundation.

Developing the drinks was far from simple. With over 300 registered hop varieties, each offering different citrus, spicy, grassy or even coconut notes, the team spent months balancing the bitterness, aroma and natural fruit juices – no sugar or malt to mask imperfections. Pasteurisation added another layer of complexity, as the team had to preserve freshness and delicate flavour through heat treatment. The isotonic drink posed an even bigger hurdle: it needed to match blood plasma osmolality for effective hydration without tasting salty. The solution relied on natural ingredients and real fruit juice, avoiding artificial flavours and sweeteners.

The sports formula was refined in collaboration with triathlete Richard Varga and cyclists Peter and Martin Velitsovci, who tested prototypes and pushed for a taste that works both during performance and in everyday life. “Most isotonic drinks don’t taste like something I’d open outside of a race,” says Varga. “Cherry Recovery and Outlast are different – they taste natural and don’t resemble a lab-mixed drink.” Beyond the product itself, Liquid Positive must also educate Slovak consumers about hop water, a category already established in the US, Australia and Germany but virtually unknown in the local market. Co-founder Tomáš Polerecký describes the mission: “Our commitment is to fight against sugar and offer a healthier alternative to people who have nothing to choose when they don’t want sweet drinks, alcohol or radler.”

Inside the Development of Hop-Based Functional Drinks and the Slovak Market Challenge

Why the Hop Water Category Remains Underdeveloped in Slovakia

While hop waters have gained traction abroad, the category is almost absent in Slovakia. Liquid Positive is effectively pioneering the segment, which means the company must not only sell a product but first explain what hop water even is. The biggest barrier is psychological: hops are synonymous with beer and alcohol, though the plant itself contains none and behaves differently without malt. “The biggest challenge is getting people past that first prejudice,” says marketing manager Alexandra Bukovčanová. “You need to taste it to understand that hops can work completely differently than they imagined.” This educational hurdle slows adoption but also gives the brand a first-mover advantage if it can build a loyal customer base before larger international brands arrive.

The Athlete Collaboration as a Credibility Play

Bringing in known Slovak athletes – triathlete Richard Varga and cyclists Peter and Martin Velitsovci – was a deliberate step to lend functional credibility to the isotonic line. Their public testing and endorsement signal that the drink meets real performance needs, not just a marketing promise. The involvement also helped fine-tune flavour and ingredient ratios, ensuring the beverage stays scientifically sound while tasting good enough for daily use. This kind of athlete partnership is common in sports nutrition, but Liquid Positive’s bet is that it can translate that credibility into a broader lifestyle choice, positioning the drink as a premium, natural alternative to sugary sports beverages. Whether that will resonate beyond the core athletic community in a price-sensitive market remains to be seen, but the approach mirrors successful strategies of early-stage functional drink companies elsewhere.