How To Make Bru Coffee At Home. Cover your container and let the cold brew steep for the next 15 hours. Once the water has boiled and risen up to the hopper, lower the heat and add the coffee grounds in the hopper, then stir.

In order to speed up the brewing process, the researchers utilized a special kind of laser and adjusted its settings down to the picosecond, which. You’ve got to find the perfect ratio of coffee to water. Add 18g of coarsely ground coffee to your cafetiere.




