You should try tea that isn’t shocked… Green tea is especially bitter and unpleasant if the water’s too hot. The recommended temperature is 80°C, if I remember right.

But even black tea tastes less bitter if you use slightly rested water after boiling (and if you remove the teabag without squeezing it out). You’re probably used to teas being astringent, but they don’t have to be. They can be smooth and “rounded” and rich.

That’s a great way to make the air inside the teabag expand but not be able to escape through the wet paper, making the teabag float on top of the water like a confused little fish that just escaped a dentist’s aquarium.