Hario has taken the hassle out of cold brewing coffee. Simply place your coffee grounds in the strainer, add cold water and set in the fridge for 8 hours. The filter is a closed compartment in the bottle, which means that water can get in and out, but the grounds cannot. This thoughtful design allows you to simply lift the grounds out and serve! A beautiful looking server as well, just like the rest of Hario's products.
650 mL makes approximately 5 cups.
I purchased this products a few weeks ago, and have been using it regularly (with coffee beans I purchased from Drink Lab). It was really easy to use, the instructions were clear and simple. It produced delicious cold brew coffee, no bitterness or acidity. The bottle can be stored in the refrigerator, and having the 2-part strainer kept the coffee separate, which made it very easy to clean. I would recommend purchasing the Hario filter in coffee bottle.