Coffee knowledge
Answers to coffee questions — from bean to cup. Written by Norbert Ahnsorge, owner of Green Wall Coffee in Berlin-Lichtenberg.
Topics
- Coffee Basics & General
9 questions - Coffee Varieties & Botany
10 questions - Growing, Origin & Climate
12 questions - Harvesting & Processing
12 questions - Roasting & Roast Levels
14 questions - Freshness & Storage
10 questions - Grinding & Grind Size
12 questions - Water & Water Quality
9 questions - Espresso Preparation (Portafilter)
18 questions - Filter Coffee & Pour-Over
9 questions - French Press
7 questions - AeroPress
6 questions - Moka Pot
7 questions - Cold Brew & Iced Coffee
10 questions - Super-Automatic Machines
10 questions - Milk, Milk Foam & Latte Art
11 questions - Coffee Drinks & Specialties
10 questions - Health & Caffeine
3 questions - Decaffeinated Coffee
4 questions - Specialty Coffee & Industry
10 questions - Flavor, Sensory & Aromas
7 questions - Problems & Troubleshooting
8 questions - Sustainability & Ethics
6 questions - Coffee at Home vs. at a Cafe
5 questions - Bonus: Local & Green Wall Coffee
6 questions - Green Wall Coffee in Detail
21 questions
Guides
- Drip Coffee Machine: What Actually Matters
ECBC certification, glass carafe, water quality: what makes a good drip coffee machine. Practical tips from Norbert in Berlin-Lichtenberg. - How to Make Perfect Espresso: 5 Key Factors
Improve your espresso at home: grind size, water, dosing – Norbert Ahnsorge from Berlin-Lichtenberg explains the 5 decisive factors. - Pour-Over Guide: Filter Coffee by Hand
Pour-over step by step: dosing, water temperature, bloom, and brew time. Norbert Ahnsorge from Berlin-Lichtenberg explains the hand pour.