Hario Mizudashi Cold Brew Coffee Maker 600ml MCPN-7B - Iced Coffee Pot for Home, Office & Outdoor Use - Perfect for Summer Drinks & Refreshing Beverages

Easiest brewing method I've tried; I prefer cold coffee to hot so this is perfect. Makes rich, luxurious, practically "essence" of coffee with no heat distortion. A touch naturally sweet. Have had no problems with grounds in the coffee.My style of preparation for a coffee concentrate:1) I buy Starbucks coffee by the pound online; there is only a choice of whole bean or ground. I get ground. I have no idea what it specific grind it is intended to be.2) I fill the filter with ground coffee to about 1 cm below of the bottom of the plastic ring at the top of the filter. So, about 1 cm "daylight" shows through.3) I add room temperature bottled water gradually, stirring gently with one chopstick. Pour, let it filter through, pour some more.4) I add enough water (maybe 20ish ounces?) so that the top of the mixture hits the midway mark of the plastic ring at the top the glass beaker. I estimate. Just not so much that the filter won't rest in the pot (though it does need to be pushed down gently before putting the top on).5) In the fridge for 8+ hours (overnight).This makes a concentrate that can be diluted with cold bottled water to taste, as sometimes I like it stronger (about 2:1 coffee to water), sometimes less strong (1:1). I store the concentrate in the fridge in a 39-ounce Bormioli Rocco Frigoverre Jug with Hermetic Lid (available on Amazon), and only have to make the coffee every couple days. Clean up couldn't be easier, just dump the grounds and rinse the pot and filter. Before I clean it, I let the filter full of grounds rest for awhile standing in a bowl or mug to get all of the the water/coffee that is left in it.