Iced coffee is brewed like regular coffee, which means using hot water for the brewing phase to extract all the delicious sweetness and brightness, and then switching to cold water during the water bypass phase. That helps reduce dilution when you add ice to the brewed beverage. For cold brewing, Bruvi® uses lukewarm water during the brewing phase over a longer duration to extract the smoother flavor of cold brew. Cool water is also used during the water bypass phase, which again helps minimize dilution if you add ice.
WARNING: Do not brew iced coffee or cold brew directly in a glass cup with ice