The Barn

Overview

Ralf Rüller — formerly a Deutsche Bank apprentice, then a corporate finance professional in Singapore, Tokyo, and Berlin, then an actor in London — opened The Barn as a cafe in Berlin's historic Scheunenviertel (Barn Quarter) in 2010, then began roasting in 2012 after mentorship from Square Mile in London and Tim Wendelboe in Oslo. The Barn was the first roaster in Berlin to commit to Nordic-style light roasting and single-origin only.

Known for

• Custom Probat UG-22 / UG-25 roaster, single-origin only with no blends
• Strict cafe rules — water served at 70°C, milk steamed to 55°C, no cold milk or sugar, original location was famously laptop- and music-free
• Allegra Best Independent Specialty Coffee Shop in Europe (2018)
• Allegra Best Specialty Coffee Roaster in Europe & the Middle East (2019)
• Exports to 82 countries via wholesale and subscription
• International cafes in Dubai, Palma de Mallorca, South Korea, London, and Munich
• Customer-water sampling project — collecting tap water from subscribers worldwide to calibrate roast for global consistency

Why it matters

The Barn defined what specialty coffee looks like in Germany, in a market that had been dominated by Tchibo, Dallmayr, and Melitta. Rüller's purist approach — single-origin only, no music in the original cafe, no cold milk, no sugar — turned an opinionated cafe philosophy into a globally-respected wholesale brand exporting to 82 countries. It is the rare case of editorial strictness compounding rather than limiting commercial reach.

Production

head roaster

Ralf Rüller (founder, also handles green buying and quality control)

roaster machine

Custom Probat UG-22 / UG-25

cupping frequency

Continuous — the head barista takes notes on roasts each day and shares feedback with the roaster

roastery location

Brunnenviertel roastery, Berlin

Café

This roaster operates a café.

Recognitions

• Allegra Best Independent Specialty Coffee Shop in Europe (2018)
• Allegra Best Specialty Coffee Roaster in Europe & the Middle East (2019)
• First specialty roaster in Berlin to commit to Nordic-style light roasting and single-origin only

Sources

• https://www.worldcoffeeportal.com/interview/how-ralf-ruller-built-the-barn/
• https://coldbrewpak.coffee/2025/03/04/ccss-the-barn/
• https://collectedcoffee.com/blogs/journal/125092867-ralf-ruller-the-barn
• https://www.coffeeinsurrection.com/ralfrueller-thebarn-coffeeroasters.html
• https://www.thewaytocoffee.com/specialtycoffeeblog/thebarn
• https://www.greenplantation.com/a/the-barn-coffee-roastery