Function: This coffee alive blanching tool effectively reduces acidity and bitterness, enhances coffee flavor, and cools coffee without diluting the espresso. this gives your coffee a purer taste.(Its main purpose is not to chill coffee and cannot effectively reduce the temperature of coffee！！！） Professional Coffee Partner: This espresso chilling ball has a detachable holder and is designed to be universal and can accommodate almost any coffee cup. Additionally, the ice balls won't soak into the coffee. This step can significantly enhance the flavor of your coffee. Easy to use: Chill the espresso ball in the freezer for 2-4 hours. Then, place the coffee frozen ball with stand on your cup and let the coffee flow down through the freezer ball. Easy storage:The espresso ice ball set comes with its own storage box, which is cleaner and less contaminated during refrigeration. Material:The frozen ball made from food grade stainless steel, safe and durable.This espresso cooling balls can not only be used for coffee but also for bourbon, scotch, and cocktails. This espresso Frozen Ball allow you to effectively remove the bitterness from your coffee while keeping the flavorful components that make coffee so enjoyable.