Brew Great Coffee

Product Introduction

1. Definition: Brew Great Coffee is a free, privacy-focused web application for specialty coffee brewing, classified as an interactive coffee diagnostic and recipe toolkit. It functions as a Progressive Web App (PWA) with offline capability.
2. Core Value Proposition: It eliminates guesswork in coffee brewing by providing real-time espresso diagnosis, expert pour-over recipes, and a data-driven flavor database—requiring no accounts, ads, or cookies.

Main Features

1. Extraction Compass:

   • How it works: Users click a grid (axes: sour/bitter × weak/strong) to describe espresso taste. An algorithm cross-references this input with the coffee’s origin, processing method, and roast level to generate instant brewing corrections.
   • Technology: Adaptive diagnostic engine using coffee attribute databases (30+ origins, 60+ varieties, 20+ processes).

2. Expert Pourover Recipes & Timer:

   • How it works: Curated recipes from James Hoffmann, Scott Rao, and Tetsu Kasuya include phase-by-phase instructions. The built-in timer auto-synchronizes with each brewing stage (e.g., bloom, pours).
   • Technology: Dynamic timers with visual/audio cues for precision.

3. Interactive WCR Flavor Wheel:

   • How it works: Clicking a flavor note (e.g., "berry," "chocolate") displays recommended beans based on origin, variety, and processing data.
   • Technology: Linked relational database mapping sensory attributes to production variables.

4. Offline-First PWA:

   • How it works: Caches all tools locally via service workers. Zero data collection; no cookies, ads, or login requirements.

Problems Solved

1. Pain Point: Diagnosing espresso flaws (sourness, bitterness, weakness) without technical expertise.
   • Keywords: espresso troubleshooting, sour shot fix, bitter coffee solution.
2. Target Audience: Home baristas, light-to-dark roast enthusiasts, and coffee learners seeking structured guidance.
3. Use Cases:
   • Correcting under-extracted light roasts using real-time ratio/temperature adjustments.
   • Selecting beans matching flavor preferences via the WCR Flavor Wheel.
   • Executing complex pour-overs with expert timing.

Unique Advantages

1. Differentiation: Unlike subscription-based apps (e.g., Barista Hustle), it offers full functionality for free, prioritizes privacy, and adapts advice to specific bean attributes. Competitors lack integrated water chemistry guidance or offline access.
2. Key Innovation: The Extraction Compass’s adaptive algorithm—unique in publicly available tools—personalizes fixes using origin/process/roast data, replacing generic advice.

Frequently Asked Questions (FAQ)

1. How does Brew Great Coffee diagnose espresso issues?
   Click the taste grid (sour/bitter × weak/strong), and its algorithm analyzes your input alongside coffee attributes (roast, origin, process) to prescribe fixes like yield adjustments or grind changes.

2. Can I use Brew Great Coffee offline?
   Yes, it’s a Progressive Web App (PWA) caching all tools—Extraction Compass, recipes, Flavor Wheel—for offline use. No internet needed after initial load.

3. What water mineral levels are ideal for espresso?
   Target 50-100 ppm TDS: 10-30ppm magnesium (brightness), 20-40ppm calcium (body), and <40ppm bicarbonate (to avoid flatness). Hard water (>150ppm) causes scale and muted flavors.

4. How does roast level affect Brew Great Coffee’s recommendations?
   Light roasts require higher temps (94-96°C) and longer ratios (1:2.5-1:3); dark roasts use lower temps (88-91°C) and shorter ratios (1:1.5-1:2). The tool auto-adjusts advice when you input roast data.

5. Why prioritize grinders over espresso machines?
   Particle uniformity (from high-end grinders) drastically improves extraction. A €500 grinder + €200 machine outperforms a €1500 machine + €100 grinder—confirmed by Brew Great Coffee’s diagnostic data.