Does the 5 minute infusion really work? Most recipes have a full bottle infusing for 2 hours, but is five minutes enough for a single serving? Also, how much tea to use for a single serving? As much as if I was making a regular cup of Earl Grey?

I think for a quantity so minute as 2 shot 5 minutes should work (it did for me), if you wanna infuse an whole bottle you should probably use more than one tea beg and leave it over night.