Coffee Collective run by Students in Zurich
What we do
We make tasty coffee
Irrational Coffee is an AMIV commission dedicated to spreading alternative coffee culture. If you are interested in learning more about different coffee beans, processing techniques, brewing methods, or anything coffee-related, then this is the place for you!
See what we are getting up to on instagram irrational.coffee and stay up to date with our Telegram channel!
Coffee stand times for Spring Semester 2026:
Filter Coffee
(V60)
Weird, clear and fruity coffee juice.
Espresso
(Cappuchino, Espresso Tonic)
High Pressure, High Flavour.
Matcha
(Matcha, Latte, Iced)
Cultured powdered Japanese green tea
HS25 Events
Stay up to date with our Telegram channel.
How to Latte Art
TBA
Where: TBA
Event where you can learn how to steam milk with either a traditional steam wand or alternativly, a nanofoamer (milk whirling wand)
Catering @ Coding Weekend
24.04.2026 - 26.04.2025
Where: TBA
serve coffee to 40+ coders for 3 days
Coffee Crawl HS25
TBA
Where: At the Polybahn entrance near Polyterasse
If you know coffee and pub crawl, you can imagine what this is.
Coffee Cupping HS25
TBA
Where: TBA
cupping, degustation, whatever you wanna call it. The best opportunity to taste a variety of coffee notes and flavors!
Some Previous Events
Irrational goes Swiss Coffee Festival
22.November 2025
Where: StageOne Zurich
Come along and visit the Swiss Festival hosting a bunch of companies displaying their excellence at coffee brewing!
Irrational Coffee x Cyberfy @ VISCON
11 October, 2025
Where: Cyberfy Stand, HG
Serving Coffee for Cyberfy @ VISCON, with equipment sponsored by Cyberfy and provided by CoffeeCoachingClub
Catering at ETH Mobility Day
10.04.2025 9:00 - 16:00
Where: ETH Polyterasse
Provided catering Service for ETH Mobility Day for 400+ people. Sponsored by CoffeeCoachingClub with Ascaso Baby T Plus and Ceado e37z.
Catering at Coding Weekend
15/11/24 - 17/11/24
Where: Flumserberg
serve coffee to 40+ coders for 3 days
Coffee Crawl
24th of October
Where: MAME, Miro, Collective Bakery, Coffee, BeanBank
With 14 participants.
Coffee Cupping 2021
3rd of March
Where: Virtual
The coffee tasting took place on Zoom, where 40 participants got the chance to test 8 different coffees and discover the flavours each of them had to offer.
Team
We are coffee enthusiasts.
Oscar von Löhneysen
President
Chang Jin Lee
Questor/Website Manager
Edward He
Barista (Filter)
Jannis Piekarek
Barista (Espresso)
Simon
Barista (Espresso)
Laura Hetz
Barista (Filter)
Jan-Philip Buecker
Barista (Espressso & FIlter)
Florent Oppikofer
Barista (Filter)
Tomas Prazak
Barista (Filter)
Pascal Gehring
Barista (Espresso) (Self-proclaimed Head of Latte Art)
David Dai
Barista (Filter)
Supported by
Our club is made possible through the generous support of many student organisations within the ETH.
