The Metallic Taste in My Self-Roasted Coffee—And Why It’s Ruining My Cups
Real talk: I’m stuck in a loop of bad roasts. Every batch of self-roasted Arara coffee from Brazil’s 880m altitude ends up tasting like someone poured rusted nails into my cup. The metallic, dirty, and vaguely metallic note hits at minute 6, smothering the rest of the profile. It’s not the beans—it’s the same coffee, same roast, same setup, and sometimes it’s great. Other times? A nightmare. The problem is laser-focused: a metallic tang that lingers like a bad memory. It appears consistently around 6 minutes into the roast, regardless of weight loss (11-13%), and refuses to let the coffee…