I used to do this with my Aeropress. I added an icecube on top of the ground coffee and poured boiling water over it. It reduced the temperature from 100°C to a

I used to do this with my Aeropress. I added an icecube on top of the ground coffee and poured boiling water over it. It reduced the temperature from 100°C to about 80°C if I remember correctly. Anyway, it came out ready to drink, and generally you can just brew with less water and then the dilution is not a problem.