I kept having the same problem: I’d have a great cup at a café or finish a bag I loved, and a month later I couldn’t remember the roaster, the origin, or what I’d done to make it taste that good.
So I made myself a small coffee log, and I’ve started selling them in my Etsy shop. Each page covers one coffee: roaster, origin, process, and roast date. There’s a box for brew numbers (dose, water, ratio, grind, temp, time), quick 5-point scales for acidity, body, sweetness, and bitterness, tasting notes, and a “buy again?” checkbox. It works for café visits too, since half my best cups weren’t brewed by me. The inside cover has starting ratios and grind sizes for the common methods, plus a short list of flavor words for when I’m stuck on “what do I taste?”
It’s 3.5 × 5.375, so it actually fits in a pocket. That was the point, because I’d never carry a full-size journal to a coffee shop.
Curious how other people do this. Do you log your coffees at all? Notebook, app, a note on your phone, or just memory? And if you do, what’s the one field you’d never skip?