Why use immersion rather than cold brew for your iced coffee? • Immersion makes a better and more even job at extracting the coffee than percolation. • Longer brews allows for cooler liquid, therefore requiring less ice and reducing the dilution for your iced coffee: between 4/5 and 10 minutes. Plus, it makes a more delicious drink with immersion techniques. Extra tip for the best iced coffee: Adding a few drops of saline to your drink decrease the perceived bitterness, which tends to be higher