Pick one, and watch the colour actually arrive over the actual minutes it actually takes.
—
The times are the published ranges, not a number invented here. Every tea below shows the steeping range and water temperature that tea sellers and tea associations generally publish for it — and it shows them as ranges, because that is how they are given. Nobody agrees that green tea takes 132 seconds. They agree it takes somewhere between one and three minutes in water well off the boil, and the slider lets you choose inside that. What this page will not do is pick a precise-looking number and present it as fact.
Matcha is on the list and is not a steeping time, because it is not steeped — it is whisked into suspension and drunk leaf and all. Rather than quietly leave it out or give it a fake steep, the card says what it actually is and times the whisking instead.
The colour arrives on the clock. The infusion is drawn as a real diffusion — plumes leaving the leaf, spreading, and slowly filling the cup — and how far along it is comes from elapsed real time, not from an animation that runs at its own pace. Reloading the page does not restart your tea; the clock is remembered, so a cup you left is still going.
The chime at the end is three sine partials and a little noise, generated here like everything else that makes a sound in this cabinet.