The unique stainless steel coffee filter, with pierced exterior and fine mesh lining, allows the natural oils that contribute to coffee s complex flavor to infuse the brew, while filtering out more sediment than traditional reusable coffee filters. Eliminates using paper coffee filters, which can strip out these flavorful oils. Water levels marked on the carafe ensure a precise measure. Brew only what s needed, single cup coffee to 4-cups, for consistent flavor with less waste. For best coffee brewing results, boil 6-ounces of water per serving. Place the filter into the Coffee Maker and measure in medium-grind coffee with the handy coffee scoop. Using just-boiled water, wet the grounds slightly and let stand for 30 seconds to expand or bloom coffee and extract its most robust flavor.