The fast bottom is a possible bottom to use with the [[Orea Brewer V4|Orea V4]] modular brewing system: > A beauty and a beast, our new signature design stands out from the rest. There is no restriction and no way water can clog up. It goes well with any coffee, but our recommendation is to use it with **washed, dense coffees** in particular. You can always clog a paper filter, but you won't clog this brewer.