About the founder
Madritsch Gastroconcepts was born from a deep-rooted belief that gastronomy is more than just food or drinks—it's an experience that blends storytelling, strategy, and service.
Behind the Bar to Behind the Business
Founded by Sarah Madritsch, Madritsch Gastroconcepts began as a vision to bridge the gap between creative culinary artistry and operational excellence.
After years behind the bar and in hospitality leadership, Sarah saw a recurring need: businesses with potential lacked tailored strategies to thrive long-term. That's when she decided to turn her expertise into something bigger.
About the founder
Sarah Madritsch
Originally from Bangkok, Thailand, Sarah Madritsch began her hospitality career at Tropic City, one of Asia's most celebrated cocktail bars. The venue earned consistent placements on the Asia's 50 Best Bars list and was nominated for Best International Cocktail Bar at the Tales of the Cocktail Spirited Awards. In 2019, she moved to Zurich and joined the acclaimed Widder Hotel, where the bar received a Tales of the Cocktail nomination, a listing in World's 50 Best Discovery, and accolades from GaultMillau and Falstaff.
In 2022, Sarah joined IGNIV Zürich, the city's renowned two-Michelin-starred restaurant, where she was named Barkeeper of the Year Switzerland 2022 and earned Best Bar Menu Switzerland 2024. With over a decade of experience across cocktail bars, five-star hotels, and Michelin-starred kitchens, she now works as a gastronomy consultant, certified sommelière, and award-winning barkeeper. Sarah specializes in beverage concept development, operational optimization, and guest experience design—partnering with hospitality brands to build strategic, sustainable, and guest-focused concepts.
The Story of Rhomvaris, our Creative spirit
Rhomvaris is more than a name—it's a reflection of our creative philosophy.
"Rhom" the rhombus: a shape rooted in geometry, balance, and timeless structure. It reflects our commitment to clarity, precision, and operational strength
"Varis" comes from Latin, meaning change or diversity. It speaks to our embrace of evolution, flexibility, and the dynamic nature of gastronomy.
Together, Rhomvaris represents our ethos: blending order with creativity, consistency with innovation. It's the foundation for how we craft hospitality concepts that are both resilient and remarkable.
Our Mission & Vision
What do we stand for?
We believe the future of hospitality is built on bold ideas, meaningful experiences, and intentional design
Our mission
is to empower hospitality businesses to turn ideas into iconic experiences.
Whether it's launching a new concept, refining operations, or enhancing guest engagement, we craft solutions that are strategic, authentic, and sustainable.
We envision
a hospitality landscape where innovation, individuality, and operational excellence coexist—and we're building that future one project at a time.
Work with us