Free coffee brewing toolkit for home baristas: 🎯 Extraction Compass – Click where your shot tastes (sour/bitter × weak/strong), get instant diagnosis. Adapts to your bean's origin, processing & roast level. ☕ Pourover recipes from Hoffmann, Rao & Kasuya with built-in timer. 🎨 Interactive WCR Flavor Wheel – Click a flavor, see which beans to buy. 📚 Database: 30+ origins, 60+ varieties, 20+ processing methods. No account. No ads. No cookies. Works offline.