Pour-Over
Brew Guide
A V60 timer and ratio calculator, designed and built by Luis Ramirez.
Jump to timerDesign meets craft
Good design and good coffee both come down to the same thing: precision, process, and paying attention to the details most people skip. I built this pour-over coffee timer as a side project that puts two daily obsessions in one place: interaction design and brewing a better cup. Every ratio slider, countdown, and haptic nudge is a small UX decision, the same kind of thinking I bring to client work at Cast Iron LA.
1 : 15 Coffee : Water
I know my…
20g
Your Brew
20g
300g
10.1 fl oz
300 ml
40g
50g
discardPour Breakdown
Bloom water is 2× coffee weight. Saturates grounds and lets CO₂ escape before the main pour.
Rinse water removes paper taste and pre-heats your vessel. Always discard before adding grounds.
A vigorous bloom = fresh beans. Roasted within the last 2–4 weeks is the sweet spot.
Brew Session
Roast
202°F / 94°C
Medium, Like rough sand
Hand grinders: err coarser. Adjust finer next brew if needed, never the other way first.
Before you brew
Notes on the Craft
Built by Luis Ramirez, art director and co-founder of Cast Iron LA. Read the blog or get in touch.