Starbucks&reg; Classic Pour-over Brewer #4 Many coffee lovers believe that the manual coffee brewing system invented by Melitta Bentz in 1908 is the best way to brew delicious coffee. This single-serving brewing system regulates flow to allow for the full extraction of coffee flavors  and it's so easy to use. Place the pour over cone over your favorite mug and brew. Best fit for mugs with 3.5" mouth diameter or smaller, this Classic Pour-Over can be used with certain pour over stands and includes sample #4 paper cone coffee filters (recommended for best results). Dishwasher safe. Mug not included.