How? It's actually really simple. Each tray is shallow, which means that there is minimal pressure loss as the water level changes. But more importantly, because each tray drips simultaneously, the bottom tray that drips over the coffee remains full, meaning the drip rate over the coffee remains steady, and is constant right up until the higher trays are completely emptied out. Delter Cold Drip Coffee Maker Features Automatic Dripping – With pin hole drains in each tray set to 1 Drip a second. Easy Set-Up – Add Coffee, Will each water tray and let it brew away. Quick Cold Brewing – You don’t have to wait overnight, it’ll be ready in under 5hrs. Clean Flavour – Using a 304g Reusable fine mesh filter, it eliminates any sediment entering the final brew. Great Capacity – Will brew up to 600ml of cold brew concentrate to mix with milk, water or your choice of mixer. This Product Includes: Delter Cold Drip Coffee Maker Glass Pitcher Reusable Stainless Steel Filter The Specifics Materials Borosilicate Glass, BPA-free plastic, Stainless Steel Mesh Filter Dimensions (mm) (H) 272 (ø) 112 Capacity 600ml Water | 50g Coffee Filter Reusable S/Steel – 50 Microns Brew Time 3-4 hrs
