Cool story with an interesting ending (to me at least).

Just a tiny nit... Should "Brewed as directed for 4 minutes in boiling water." be "Brewed as directed for 4 minutes in boiled water." Was the tea sitting in water that was boiling or placed in water that just boiled? The later is how I brew my teas.

Isn't boiled water what goes up into the air?

Left in previously boiled water for 4 min. We can deduce this from the second sample, which simulates forgetting your tea bag in the mug for 15 min.